Zone Master, Normal View, 10 deg FOV, Master Map Normal View χ ι Orion τ σ2 σ1 α ldebaran ε θ1 θ2 υ κ1 κ2 δ3 δ1 δ2 γ ω2 Struve's Lost Nebula Hind's Variable Nebula Taurus ω1 +16 00' +18 00' +20 00' +22 00' +24 00' ο1 ρ π 05h 04m 04h 56m 04h 48m 04h 40m 04h 32m 04h 24m 04h 16m 04h 08m 04h 00m
, Map 1 Normal Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. υ pm 60 κ1 κ2 62 Tau Hipparcos 568 Kappa 1 Tau STF 541 rej ur 87 STF 523 ur 86 LDS 1161 51 Tau STF 499 STF 494 36 Tau 37 Tau 39 Tau STF 482 Scardia 26 STF 479 Scardia 28 +21 00' +22 00' +23 00' +24 00' +25 00' ω2 04h 30m 04h 25m 04h 20m 04h 15m 04h 10m ur 309 04h 05m 04h 00m
, Map 1 Mirror Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. STF 479 STF 482 Scardia 26 37 Tau 39 Tau Scardia 28 36 Tau STF 494 STF 499 62 Tau Hipparcos 568 STF 523 ur 86 υ LDS 1161 Kappa 1 Tauκ1 κ2 STF 541 rej pm 60 51 Tau ur 87 +21 00' +22 00' +23 00' +24 00' +25 00' ω2 ur 309 04h 00m 04h 05m 04h 10m 04h 15m 04h 20m 04h 25m 04h 30m
, Map 2 Normal Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. NGC 1554-5Hind's Variable Nebula Struve's Lost Nebula ε STF 546 STF 545 83 Tau δ3 Delta 3 Tau ergh 2 δ1 Delta 1 Tau δ2 θ1 Hyades θ2 Theta 2 Tau ω1 ur 309 OS 72 pm 49 +16 00' +17 00' +18 00' +19 00' +20 00' 80 Tau 71 Tau γ OS 82 STF 495 04h 30m π 04h 25m 04h 20m 04h 15m 04h 10m 04h 05m 04h 00m
, Map 2 Mirror Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. pm 49 ur 309 OS 72 ω1 NGC 1554-5 Delta 1 Tau δ1 Hind's Variable Nebula Struve's Lost Nebula δ2 ε STF 546 δ3 83 Tau Delta 3 Tau ergh 2 Hyades STF 545 θ1 θ2 +16 00' +17 00' +18 00' +19 00' +20 00' γ 71 Tau STF 495 OS 82 π 04h 00m 04h 05m 04h 10m 04h 15m 04h 20m 04h 25m 04h 30m
, Map 3 Normal Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. 98 Tau Pourteau 504 ur 1237 Larink 1 STF 611 rej τ Tau Tau STF 579 STF 562 +21 00' +22 00' +23 00' +24 00' +25 00' Kustner 85 Hough 333 NGC 1615 05h 00m 04h 55m 04h 50m 04h 45m 04h 40m 04h 35m 04h 30m
, Map 3 Mirror Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. pm 60 STF 562 τ Tau Tau STF 579 98 Tau Pourteau 504 ur 1237 Larink 1 STF 611 rej +21 00' +22 00' +23 00' +24 00' +25 00' Hough 333 Kustner 85 NGC 1615 04h 30m 04h 35m 04h 40m 04h 45m 04h 50m 04h 55m 05h 00m
, Map 4 Normal Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. 96 Tau 97 Tau STF 598. G. 311 NGC 1647 Hough 333 LDS 2266 σ2 σ1 NGC 1615 STF 567 lpha Tauα ldebaran 89 Tau Sigma 2 Tau STF 559 LDS 2246 ε θ1 θ2 +16 00' +17 00' +18 00' +19 00' +20 00' STF 605 rej Orion h3262 ρ 05h 00m 04h 55m 04h 50m 04h 45m 04h 40m 04h 35m 04h 30m
80 Tau LDS 2246 STF 559 α NGC 1615 STF 567 lpha Tau ldebaran 89 Tau σ2 σ1 Sigma 2 Tau, Map 4 Mirror Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. Hough 333 LDS 2266 Orion. G. 311 NGC 1647 97 Tau STF 598 96 Tau STF 605 rej +16 00' +17 00' +18 00' +19 00' +20 00' ρ h3262 04h 30m 04h 35m 04h 40m 04h 45m 04h 50m 04h 55m 05h 00m
Index 54 Double Stars, 1 right Nebula, 2 Open Clusters, 1 Galaxy Flamsteed 36 Tau... 11 37 Tau... 7 39 Tau... 8 51 Tau... 9 62 Tau... 6 71 Tau... 17 80 Tau... 21 83 Tau... 17 89 Tau... 33 96 Tau... 29 97 Tau... 31. G. 311... 28 lpha Tau... 33 ergh 2... 16 pm 60... 11 ur 1237... 27 ur 309... 19 ur 86... 4 ur 87... 12 D Delta 1 Tau... 19 Delta 3 Tau... 20 H Hipparcos 568... 8 Hough 333...27 Hyades...22 K Kappa 1 Tau...10 Kustner 85...24 L Larink 1...25 LDS 1161...9 LDS 2246...30 LDS 2266...29 N NGC 1554-5...22 NGC 1615...36 NGC 1647...35 O OS 72...14 OS 82...20 P Pourteau 504...26 S Scardia 26...10 Scardia 28...13 Sigma 2 Tau...30 STF 479...3 STF 482...6-1 -
STF 494... 4 STF 495... 15 STF 499... 12 STF 523... 5 STF 541 rej... 7 STF 545... 15 STF 546... 14 STF 559... 32 STF 562... 26 STF 567...35 STF 579...23 STF 598...28 STF 605 rej...31 STF 611 rej...25 T Tau Tau...24 Theta 2 Tau...18-2 -
, Map 1 Double Stars Easy STF 479 DS 2926; HD 25201; SO 76388; H N 93 Position: 0401+2312 Rating: 1 E Magnitude Separation P Year Spectra Colors 6.52 9 V Y 7.47 8.0 + 123-1994 O C 9.40 57.7-242 + 1988 F0 IV? 1831: 7.4 @ 129. 77 measurements. Hipparcos/Tycho data show different distances for these stars; they may be optical. C 1831: 58.1 @ 241. 25 measurements. Common proper motion. C8 at 65x. Rich field. Webb saw them as W, W and?. Scale model (in which the Sun is the size of a baseball): Diameter: = 9.60 inches; C = 12.5 inches. Separation: = 13.5 miles; C = 97.3 miles. Distance (LY): 1,080 Total luminosity (Suns): 376 STF 479 Observed with C11 on 11/20/03 Magnification: 98x - 3 -
STF 494 DS 3019; HD 26128; SO 76476 Position: 0409+2306 Rating: 1 E Magnitude Separation P Year Spectra Colors 6.87 3 IV W 6.97 5.3 + 187-1996 3 IV W 1828: 5.1 @ 191. 74 measurements. The stars show a similar, but small, proper motion. C8 at 104x. Scale model (in which the Sun is the size of a baseball): Diameter: = 5.24 inches; = 5.28 inches. Separation: = 6.62 miles. Distance (LY): 800 Total luminosity (Suns): 220 STF 494 Observed with C11 on 11/20/03 Magnification: 98x ur 86 DS 3083; HD 284230 Position: 0416+2331 Rating: 3 E Magnitude Separation P Year Spectra Colors 9.63 F5 W 10.23 4.2-51 + 1997 W C 13.48 26.6 260? - 4 -
1875: 4.3 @ 50. 17 measurements. C 1 measurement. C11 at 115x. Diameter: = 14.3 inches. Separation: = 3,802 feet; C = 4.56 miles. Distance (LY): 110 Total luminosity (Suns): 0.213 STF 523 DS 3131; HD 27335; SO 76552 Position: 0420+2344 Rating: 3 E Magnitude Separation P Year Spectra Colors 7.60 9.5 V W 9.80 10.1-164 - 1958 R C 8.92 108.6 + 50 + 1991 No 1829: 10.3 @ 165. 16 measurements. C 1892: 108.3 @ 48. 11 measurements. C8 at 104x. Moderate field. Diameter: = 1.25 inches. Separation: = 8.35 miles; C = 89.8 miles. Distance (LY): 530 Total luminosity (Suns): 23-5 -
62 Tau Rating: 3 E STF 534; DS 3179; HD 27778; SO 76591 Position: 0424+2418 Magnitude Separation P Year Spectra Colors 6.34 3 V Y 8.18 29.1 + 291 + 1991 1 V C 12.20 1911? C 110.5 336 1831: 28.9 @ 290. 46 measurements. C 1 measurement. C8 at 83x. Webb saw them as W and?, and wrote, "fine field." Diameter: = 12.6 inches; = 8.70 inches; C less than an inch. Separation: = 33.2 miles; C = 126 miles. Distance (LY): 730 Total luminosity (Suns): 156 STF 482 DS 2948; SO 76411 Position: 0403+2208 Rating: 4 E Magnitude Separation P Year Spectra Colors 8.95 G0 Y 10.53 13.7 + 124 = 1991 O 1830: 13.3 @ 124. 12 measurements. C8 at 104x. - 6 -
37 Tau Rating: 4 E OS 558; G Struve 4 (C); HD 25604; SO 76430 Position: 0405+2205 Magnitude Separation P Year Spectra Colors 4.36 K0 III Y! 10.27 134.0-193 + 1993 W C 12.15 235.1-213 = 1923? 1853: 138.6 @ 187. 13 measurements. C 1921: 235.2 @ 213. 2 measurements. C11 at 115x. Diameter: = 46.2 inches. Separation: = 37.8 miles; C = 66.4 miles. Distance (LY): 181 Total luminosity (Suns): 46 STF 541 rej 67 Tau; DS 3201 Position: 0425+2212 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.65 7 V W 10.00 5.0 + 331 + 1956 W C 184.3 170 1873 No D 156.8 356 1873 No 1874: 4.9 @ 327. 7 measurements. member of the Hyades cluster (star #55), it is probably a Delta Scuti variable and rotates at 153 kps. C and D 1 measurement. C8 at 206x. Very faint, it actually lies between Kappa 1 and Kappa 2 Tau. - 7 -
Hipparcos 568 HD 27923; SO 76600 Position: 0426+2348 Rating: 4 E Magnitude Separation P Year Spectra Colors 8.12 0 V W 10.46 29.1-3 + 1991 bw 1891: 29.4 @ 2. 9 measurements. The Tycho-2 catalogue indicates a photo-center solution of a known or suspected double, or one component of a double where the companion has been rejected. C11 at 115x. Diameter: = 8.37 inches. Separation: = 28.6 miles. Distance (LY): 630 Total luminosity (Suns): 20 39 Tau Rating: 5 E OS 559; CHR 158 (a); HD 25680; SO 76438 Position: 0405+2201 Magnitude Separation P Year Spectra Colors 5.90 G5 V Y 11.50 173.9 +! 359-1993 Y C 12.09 144.1 22 1924? 1853: 166.4 @ 5. 10 measurements.. variable? is optical. C 1 measurement. digitized sky survey plate (1949.973) shows 21.0 @ 141. C11 at 115x. - 8 -
LDS 1161 HD 284310; Position: 0417+2240 Rating: 5 E Magnitude Separation P Year Spectra Colors 9.77 K5 Y 11.18 98.5-107 - 1991 W 1892: 104.9 @ 111. 5 measurements. May be optical because Hipparcos gives different distances (107 and 14 light years). C11 at 115x. 51 Tau Rating: 5 E pm 52; Mclister 14 (a); HD 27176; SO 76541 Position: 0418+2135 Magnitude Separation P Year Spectra Colors 5.64 F0 V W 10.27 166.2-62 = 1918 W? 1909: 166.6 @ 62. 2 measurements. May be optical as Hipparcos shows different distances (179 and 1,810 light years). Mclister found a companion very close to in 1975 at 0.1 @ 106. Orbit calculated. In 1957 was not seen (van den os). Period is 11.3years, semi-major axis of 0.13", retrograde motion. C11 at 115x. - 9 -
Kappa 1 Tau 65 Tau; SI 9; HD 27934; SO 76601 Position: 0425+2217 Rating: 5 E Magnitude Separation P Year Spectra Colors 4.21 7 IV W 5.27 340.2 + 173 = 1956 5 Y a 11.90 141.1+ 268+ 1960? b 12.20 106.9 209 1909? 1836: 339.1 @ 173. 8 measurements. a 1909: 135.5 @ 266. 2 measurements. b 1 measurement. Star is an eclipsing binary. It is also probably a Delta Scuti variable and is a member of the Hyades cluster (star #54). It is also an occultation double. The stars share common proper motion. C8 at 104x. Diameter: = 7.20 inches; = 7.60 inches. Separation: = 81.2 miles. Distance (LY): 153 Total luminosity (Suns): 53.055 Moderate Scardia 26 SO 76379 Position: 0400+2122 Rating: 4 M Magnitude Separation P Year Spectra Colors 9.94 W 11.63 31.2 59 1985? 1 measurement. - 10 -
C11 at 115x. Distance (LY): 85 Total luminosity (Suns): 0.073 36 Tau Rating: 5 M ur 544; DS 2965; HD 25555; SO 76425 Position: 0404+2406 Magnitude Separation P Year Spectra Colors 5.46 7 V yw 12.20 25.6 + 258 = 1927? 1877: 25.1 @ 258. 7 measurements. The primary is an infra-red source. It is also an occultation binary. C8 at 104x. Diameter: = 6.75 inches. Separation: = 38.0 miles. Distance (LY): 950 Total luminosity (Suns): 381 pm 60 HD 28226; SO 76618 Position: 0428+2137 Rating: 5 M Magnitude Separation P Year Spectra Colors 5.72 m W 10.90 171.6 +! 236 + 1992 W? 1909: 161.4 @ 233. 2 measurements. is a spectroscopic and occultation binary. C11 at 115x. - 11 -
Diameter: = 6.40 inches. Separation: = 41.8 miles. Distance (LY): 156 Total luminosity (Suns): 9.94 Difficult ur 87 DS 3158; HD 27639; SO 76571 Position: 0422+2049 Rating: 3 D Magnitude Separation P Year Spectra Colors 5.91 3 V+K3II W 8.39 1.9 = 169 = 1991 O! 1875: 1.9 @ 169. 33 measurements. C11 at 634x. Diameter: = 12.6 inches. Separation: = 5.19 miles. Distance (LY): 1,750 Total luminosity (Suns): 1,150 STF 499 Guillaume 4 (D); DS 3033; HD 283432 Position: 0410+2407 Rating: 4 D Magnitude Separation P Year Spectra Colors 9.55 G0 yw 9.63 1.5-289 - 1991 W C 11.21 30.1-281 + 1911 W? D 9.11 90.6 + 207-1907 W 1833: 1.6 @ 291. 20 measurements. C 1833: 30.3 @ 280. 13 measurements. - 12 -
D 1891: 90.5 @ 208. 4 measurements. D may be optical as the distances to and D are different (414 and 620 light years). The proper motions are substantially different too. C11 at 634x. Peanut in a very nice field. Scardia 28 SO 76398 Position: 0402+2140 Rating: 5 D Magnitude Separation P Year Spectra Colors 8.75 W 10.48 28.5 155 1985? 1 measurement. C11 at 115x. Distance (LY): 1,160 Total luminosity (Suns): 40-13 -
, Map 2 Double Stars Easy OS 72 DS 3006; HD 26038; SO 93777 Position: 0408+1720 Rating: 3 E Magnitude Separation P Year Spectra Colors 5.89 K5 IIIb do!! 9.68 4.7 + 328 + 1998 d The primary is an infra-red source. 1854: 4.5 @ 324. 35 measurements. C8 at 280x. Diameter: = 6.70 feet. Separation: = 2.50 miles. Distance (LY): 345 Total luminosity (Suns): 43 STF 546 DS 3224; HD 28139; SO 93939 Position: 0427+1907 Rating: 3 E Magnitude Separation P Year Spectra Colors 7.69 F5 V Y 9.53 6.7 = 182-1991 G0 V? O 1822: 6.7 @ 189. 48 measurements. The stars share a large common proper motion. - 14 -
C8 at 104x. Diameter: = 11.3 inches; = 17.1 inches. Separation: = 2.24 miles. Distance (LY): 214 Total luminosity (Suns): 3.5 STF 545 DS 3226; HD 28150; SO 93942 Position: 0427+1812 Rating: 3 E Magnitude Separation P Year Spectra Colors 6.94 0 V W 9.57 18.0-57 = 1992 V 1821: 19.7 @ 57. 26 measurements. The stars share a small common proper motion. C8 at 104x. Webb saw them as W and bw?. Diameter: = 5.27 inches. Separation: = 11.4 miles. Distance (LY): 406 Total luminosity (Suns): 27 STF 495 DS 2999; HD 26015; SO 93775 Position: 0408+1509 Rating: 4 E Magnitude Separation P Year Spectra Colors 6.02 F3 V W 8.97 3.8 + 222 + 1991-15 -
1830: 3.6 @ 216. 49 measurements. The primary is probably a Delta Scuti variable and is also a spectroscopic binary. It is a member of the Hyades group. The stars show common proper motion and similar radial velocity. C8 at 206x. Diameter: = 4.80 inches. Separation: = 4,805 feet. Distance (LY): 153 Total luminosity (Suns): 7.9 ergh 2 V921 Tau; HD 28406; SO 93963 Position: 0430+1751 Rating: 4 E Magnitude Separation P Year Spectra Colors 6.9 0 F8 W 8.94 109.6 + 9 = 1991 G8 yw 1897: 109.0 @ 9. 12 measurements. May be optical because Hipparcos gives different distances (151 and 135 light years). C8 at 104x. This is a bright, scattered field. pm 49 HD 25202; SO 93721 Position: 0401+1812 Rating: 5 E Magnitude Separation P Year Spectra Colors 5.89 F4 V W 10.94 169.2 + 277 = 1951 W 1909: 161.3 @ 277. 2 measurements. is a spectroscopic binary. - 16 -
C11 at 115x. Diameter: = 4.50 inches. Separation: = X=39.0 miles. Distance (LY): 148 Total luminosity (Suns): 7.62 71 Tau Rating: 5 E pm 59; V777 Tau; HD 28052; SO 93932 Position: 0426+1537 Magnitude Separation P Year Spectra Colors 4.49 F0 V W 11.59 134.4-152 + 1996? 1909: 137.0 @ 149. 2 measurements. is a long-period spectroscopic binary, Period is 5,200 days, and occultation pair. C11 at 115x. Diameter: = 5.70 inches. Separation: = 32.7 miles. Distance (LY): 156 Total luminosity (Suns): 30.5 83 Tau Rating: 5 E pm 63; HD 27962; SO 93923; H VI 101 Position: 0426+1756 Magnitude Separation P Year Spectra Colors 5.40 F0 V W 11.30 111.9 105 1910 W 1 measurement. - 17 -
C8 at 104x. rich field lies in this area! Diameter: = 5.70 inches. Separation: = 25.8 miles. Distance (LY): 148 Total luminosity (Suns): 36.6 Theta 2 Tau 78 Tau; SI 10; HD 28319; SO 93957 Position: 0429+1552 Rating: 5 E Magnitude Separation P Year Spectra Colors 3.40 7 III W 3.84 337.2 = 347 + 1991 K0 II Y 1836: 337.2 @ 346. 9 measurements. Star is a spectroscopic binary (140.728 day period) and occultation binary; it is 50 times the size of the sun. It is also a probable Delta Scuti star and member of the Hyades cluster. The stars share common proper motion. C8 at 104x. Diameter: = 7.20 inches; = 24.0 inches. Separation: = 78.4 miles. Distance (LY): 149 Total luminosity (Suns): 130.2-18 -
Moderate ur 309 DS 3010; HD 26063; SO 93778 Position: 0408+1944 Rating: 5 M Magnitude Separation P Year Spectra Colors 7.69 2 W 10.97 5.8 + 280 + 1991 W? 1875: 5.7 @ 278. 10 measurements. C11 at 115x. Diameter: = 10.8 inches. Separation: = 8.24 miles. Distance (LY): 910 Total luminosity (Suns): 57 Difficult Delta 1 Tau pm 55; HD 27697; SO 93897 Position: 0423+1733 Rating: 5 D Magnitude Separation P Year Spectra Colors 3.76 K0 III Y! 12.57 112.2 + 338 = 1990? 1909: 107 @ 341. 1959: 110 @ 338. 3 measurements. The primary is a long-period spectroscopic and occultation binary. C11 at 115x. - 19 -
Diameter: = 46.2 inches. Separation: = 26.8 miles. Distance (LY): 153 Total luminosity (Suns): 57.4 OS 82 DS 3169; HD 27691; SO 93896 Position: 0423+1503 Rating: 5 D Magnitude Separation P Year Spectra Colors 6.97 G0 V V 8.50 1.3 + 344 + 1999 G1 V 1843: 1.0 @ 238. Over 100 measurements. Orbital period of 256 years, with semimajor axis of 1.18", motion retrograde. The primary is a spectroscopic binary, period of 4.00 days. C8 at 516x. Diameter: = 9.50 inches; = 4.70 inches. Separation: = 1,628 feet. Distance (LY): 152 Total luminosity (Suns): 3.6 Delta 3 Tau Rating: 5 D 68 Tau; Kuiper 17; V776 Tau; DS 3206; HD 27962; SO 93923; H VI 101 (C) Position: 0425+1755 Magnitude Separation P Year Spectra Colors 4.34 2 IV W 7.85 1.9 + 340 + 1999? C 10.49 76.2 + 235 = 1988? - 20 -
1938: 1.3 @ 320. 25 measurements. is a spectroscopic binary and variable. C 1783: 63.6 @ 235. 14 measurements. The primary is 2.1 times as large as the Sun and is a "blue straggler". Hind's Variable Nebula (NGC 1555) lies nearby (1422+1932), but is very elusive. Hind discovered it in 1852 with a 7" telescope, and, like Hubble's Nebula, its brightness varies due to the variable star (T Tauri) that illuminates it. T Tauri is a member of the Hyades cluster (star #56) and is a spectroscopic binary with a 57.25 day period. C8 at 104x. Diameter: = 10.8 inches. Separation: = 2,317 feet; C = 17.6 miles. Distance (LY): 148 Total luminosity (Suns): 38.3 80 Tau Rating: 5 D STF 554; DS 3264; HD 28485; SO 93970 Position: 0430+1538 Magnitude Separation P Year Spectra Colors 5.73 6 V Y 8.16 1.6-18 + 1999 W 1831: 1.7 @ 13. Over 100 measurements. The orbital period is 189.5 years (aize, 1977), with semi-major axis of 1.00" and retrogrtade motoin. The primary is also a spectroscopic binary with a combined mass of 2.82 Suns. It rotates at 134 kps. The primary is a spectroscopic binary. This pair is a member of the Hyades star cluster (star #80). C8 at 280x. It is a difficult pair to resolve. Diameter: = 7.20 inches. Separation: = 1,872 feet. Distance (LY): 142 Total luminosity (Suns): 9.3-21 -
Deep Sky Objects Hyades Rating: 2 E Other Names: Melotte 25; Collinder 50 stronomical League Program: Caldwell Club, Urban Deep Sky Club, inocular Deep Sky Club Position: 0427+1600 Type: Oc Class: II 3m Cluster population: 350 It is 8 light years in diameter and 660 million years old. Easy C8 at 10x. It looks great in the spotter, where I counted 49 stars in a 1st quarter moon. Model (where the Sun is a baseball): Its diameter would be 2,580 miles, with its stars 183 miles apart. Distance (LY): 150 Difficult NGC 1554-5 Other Names: Hind's Variable Nebula; Struve s Lost Nebula Rating: 5 D Position: 0422+1932 Type: Gn Magnitude: 9.4 Dimensions: 30" ccording to earlier observations, it used to be 40" southwest of T Tau. Discovered in 1852 by J. R. Hind using a 7" refractor (wow!), it was not visible to even the largest telescopes of the day by 1868. urnham and arnard recovered it in 1890 with the 36" Lick refractor, but it was lost even to these two eagle-eyed observers in 1895. It has been visible to the eye since about 1899, but varying some in brightness. - 22 -
C8 at 65x. It is lit by T Tau, a variable that ranges in magnitude from 9.4 to 13.0. It has two lobes, each with its own NGC number 1554 and 1555. It required my nebular filter to even catch a fleeting glimpse of it. It appears as two extremely difficult patches of light (overpowered by T Tau) just west of T Tau. Distance (LY): 3,260, Map 3 Double Stars Easy STF 579 DS 3388; SO 76713 Position: 0442+2244 Rating: 4 E Magnitude Separation P Year Spectra Colors 8.72 K7 III? do! 10.89 16.8 + 40 + 1991 R? 1831: 16.5 @ 30. 15 measurements. C8 at 104x. Tau Tau is 14 min NNE and overpowering. STF 579 is the N vertex of a small triangle of 9m stars. Diameter: = 37.0 inches. Separation: = 26.2 miles. Distance (LY): 1,000 Total luminosity (Suns): 28-23 -
Tau Tau 94 Tau; OSS 54; Hough 642; South 455; HD 29763; SO 76721 Position: 0442+2257 Rating: 4 E Magnitude Separation P Year Spectra Colors 4.24 3 V W 7.02 62.7-214 + 1994 1824: 62.8 @ 213. 27 measurements. The primary rotates at 187 km/sec and is a spectroscopic binary with a 2.9565 day period. The period is something like around 28 years (?). The system belongs to the Cas-Tau O1 ssociation. Hipparcos/Tycho data show different distances for these stars; they may be optical. C8 at 83x. Webb saw them as W and. Diameter: = 0.93 inches. Separation: = 39.2 miles. Distance (LY): 401 Total luminosity (Suns): 262 Kustner 85 Position: 0447+2026 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.64 F8 W 10.14 32.5 + 32 + 1991 F8 W 1896: 27.5 @ 31. 9 measurements. The stars have different proper motions. C8 at 104x. Faint. Diameter: = 0.80 inches; = 0.60 inches. Separation: = 2.80 miles. Distance (LY): 56 Total luminosity (Suns): 0.061-24 -
Larink 1 HD 31329; SO 76842 Position: 0456+2211 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.19 2 W 10.72 15.1-212 - 1991 W 1893: 15.3 @ 213. 5 measurements. Hipparcos/Tycho mission data show different distances for these stars (89 and 194 light years); they may be optical. C8 at 104x. It is framed by a large triangle of 8m field stars. STF 611 rej HD 31180; SO 76824 Position: 0454+2145 Rating: 5 E Magnitude Separation P Year Spectra Colors 9.18 G5 Y 11.60 14.1-206 - 1989? 1906: 14.3 @ 207. 2 measurements. C11 at 115x. Diameter: = 20.8 inches. Separation: = 3.82 miles. Distance (LY): 174 Total luminosity (Suns): 0.561-25 -
Pourteau 504 HD 284039; Position: 0457+2423 Rating: 5 E Magnitude Separation P Year Spectra Colors 9.26 W 11.87 17.9-75 + 1907? 1891: 18.1 @ 72. 2 measurements. C8 at 104x. 7m star is about 20 min to the WNW. Distance (LY): 118 Total luminosity (Suns): 0.22 Moderate STF 562 DS 3311; HD 28976; SO 76658 Position: 0435+2242 Rating: 3 M Magnitude Separation P Year Spectra Colors 6.78 F5 III W 9.82 1.9-283 + 1991 W 1830: 2.1 @ 270. 20 measurements. Hipparcos gives different parallaxes (6.42 mas and 11.4 mas), so the pair is probably optical. C11 at 339x. - 26 -
Hough 333 DS 3399; HD 284709 Position: 0443+2015 Rating: 4 M Magnitude Separation P Year Spectra Colors 10.19 yw 10.30 2.2 + 157-1974 yw C 10.84 34.5 + 220 = 1903 W 1891: 1.7 @ 162. 18 measurements. C 1891: 34.0 @ 220. 2 measurements. C11 at 339x. Distance (LY): 730 Total luminosity (Suns): 9.89 Difficult ur 1237 DS 3504; HD 31071; SO 76814 Position: 0454+2333 Rating: 5 D Magnitude Separation P Year Spectra Colors 7.43 K0 Y 9.99 4.7 + 57-1999? 1891: 4.3 @ 59. 18 measurements. C8 at 206x. Diameter: = 12.0 inches. Separation: = 1.41 miles. Distance (LY): 192 Total luminosity (Suns): 3.2-27 -
, Map 4 Double Stars Easy. G. 311 Rating: 2 E HD 30170; SO 94106? Position: 0446+1910 Magnitude Separation P Year Spectra Colors 8.50 0 W 9.32 33.1 = 112 = 1991 ow 1870: 33.1 @ 112. 13 measurements. The stars share common proper motion. C8 at 104x. It lies in an incredibly rich and bright field (the open cluster NGC 1647)! The cluster almost overpowers the double star. STF 598 DS 3460; HD 30456; SO 94131 Position: 0449+1748 Rating: 2 E Magnitude Separation P Year Spectra Colors 8.10 F2 W 9.96 9.3-317 - 1991 F2 d! 1828: 9.5 @ 319. 17measurements. Hipparcos/Tycho data show different distances for these stars; they may be optical. However, the stars exhibit common proper motion. C8 at 104x. is a wonderful peacock blue! - 28 -
Diameter: = 11.7 inches; = 13.0 inches. Separation: = 2.75 miles. Distance (LY): 190 Total luminosity (Suns): 2.2 LDS 2266 HD 29836; SO 94078 Position: 0443+1843 Rating: 4 E Magnitude Separation P Year Spectra Colors 7.12 G5 Y 9.92 100.0 102 1955 K8 bw C 10.20 1991 No C 141.7-103 = 1 measurement. C 1896: 142.0 @ 103. 6 measurements. Hipparcos/Tycho mission data show different distances for these stars (140 and 154 light years); they may be optical. C8 at 104x. 96 Tau Rating: 4 E h3261; DS 3464; HD 30605; SO 94151 Position: 0450+1554 Magnitude Separation P Year Spectra Colors 6.08 K3 III W 11.10 29.3-57 = 1925? C 13.10 27.5 60 1924? 1878: 30.8 @ 57. 7 measurements. The primary is an infra-red emitter. -C 1924 1 measurement. - 29 -
Diameter: = 51.3 inches. Separation: = 64.5 miles; C = 60.5 miles. Distance (LY): 1,410 Total luminosity (Suns): 607 LDS 2246 HD 28527; SO 93975 Position: 0431+1612 Rating: 5 E Magnitude Separation P Year Spectra Colors 4.78 6 IV W 6.50 250.2 + 131 = 1991 W 1955: 250.0 @ 131. 2 measurements. Star is an occulting binary. It is a member of the Hyades cluster (star #82). C8 at 104x. It is too wide to be exciting. Diameter: = 9.00 inches. Separation: = 56.6 miles. Distance (LY): 145 Total luminosity (Suns): 23.4 Sigma 2 Tau 92 Tau; SI 11; HD 29488; SO 94054 Position: 0439+1555 Rating: 5 E Magnitude Separation P Year Spectra Colors 4.67 5 Vn W 5.08 437.5 + 194 + 1991 4 Vm W Star is a spectroscopic binary, while is an occulting and spectroscopic binary. The star spins at 117 kps, and is a member of the Hyades cluster (star #108). 1836: 427.4 @ 192. 10 measurements. The stars show similar proper motions. - 30 -
C8 at 104x. It looks like two totally unrelated stars! Diameter: = 4.30 inches; = 4.50 inches. Separation: = 109 miles. Distance (LY): 159 Total luminosity (Suns): 43 STF 605 rej HD 286096 Position: 0451+1522 Rating: 5 E Magnitude Separation P Year Spectra Colors 10.91 7 W 10.85 11.4 = 282 = 1909 W 1909: 11.4 @ 282. 2 measurements. C11 at 115x. It is zapped by an 8m star 4 min NE. Diameter: = 10.2 inches. Separation: = 1.83 miles. Distance (LY): 103 Total luminosity (Suns): 0.07 97 Tau Rating: 5 E V480 Tau; pm 70; HD 30780; SO 94164 Position: 0451+1850 Magnitude Separation P Year Spectra Colors 5.08 F0 IV W! 10.44 177.0 + 302-1962 W 1909: 174.5 @ 303. 3 measurements. - 31 -
This star is a Delta Scuti variable and member of the Hyades cluster (star #123). It rotates at 141 kps. May be optical because Hipparcos gives different distances (189 and 107 light years). C8 at 104x. Moderate STF 559 DS 3297; HD 28867; SO 94002 Position: 0433+1801 Rating: 1 M Magnitude Separation P Year Spectra Colors 6.24 9 IVn W 6.29 3.0 = 277-1997 W 1830: 3.0 @ 279. Over 100 measurements. The stars show similar proper motions. C8 at 206x. Scale model (in which the Sun is the size of a baseball): Diameter: = 1.13 inches. Separation: = 1.98 miles. Distance (LY): 423 Total luminosity (Suns): 69 STF 559 Observed with C11 on 11/20/03 Magnification: 339x - 32 -
89 Tau Rating: 5 M pm 65; HD 29375; SO 94043 Position: 0438+1602 Magnitude Separation P Year Spectra Colors 5.79 F0 V W 12.43 140.5-48 - 1960? 1910: 142.8 @ 50. 2 measurements. Optical. C11 at 115x. Diameter: = 5.70 inches. Separation: = 32.7 miles. Distance (LY): 149 Total luminosity (Suns): 8.0 Difficult lpha Tau Rating: 4 D 87 Tau; ldebaran, "the follower" of the Pleiades; SI 2; ur 550 (); ur 1031 (D, E, F); S II 2; DS 3321; HD 29139; SO 94027 Position: 0436+1631 Magnitude Separation P Year Spectra Colors 0.85 K5 III ro! 13.60 30.8 = 111 + 1962 dm2 bw C 12.85 131 +! 32-1982 W? D 13.70 1.3-271 - 1962 No E 13.60 40.6 327 1956 No F 11.44 287.4 + 123-1956 W 1877: 30.8 @ 110. 17 measurements. is an unclassified variable. C 1832: 109 @ 36. 18 measurements. D 1888: 2.3 @ 281. 17 measurements. E 1899: 31.0 @ 331. 2 measurements. F 1 measurement. - 33 -
urnham found to be double-- 11m and 13.5m, 1.8 @ 279. It is not a member of the Hyades, being half as far from us as the cluster. It is 40 times as large as the Sun. It s diameter has been measured by interferometer and occultation, the experiments giving different results: 0.022" and 0.0237". The surface temperature is 3,400 o K. It is also enveloped in an infra-red emission envelope some 10 inches across and spectral studies suggest a cooler shell surrounding the supergiant. It is also an infra-red source. The star is 0.1% as bright as the sun and is 650 U from. ldebaran is a spectroscopic binary and is often occulted by the Moon. From James Kaler's Star The ancient name, from rabic, means "the Follower," as the star seems to follow the Pleiades, or Seven Sisters star cluster, across the sky. ldebaran is positioned in front of the sprawling Hyades but is not a part of it, the cluster being over twice as far away. This class K star is a low-level irregular variable star that fluctuates erratically and to the eye unnoticeably by about two-tenths of a magnitude. ldebaran's surface temperature of just under 4,000 degrees Kelvin (compared to the Sun's 5,800 degree temperature) gives it a distinct orangy color. It is a giant star, a star in an advanced state of evolution in which the interior hydrogen fuel has run out, the star now running on the fusion of helium into carbon. It has expanded to a radius about 40 times solar, making it big enough to enable astronomers to measure its small angular diameter of only 0.021 seconds of arc (the apparent size of a US nickel seen at a distance of 50 kilometers). This large star is an extremely slow rotator, taking almost two years to make a full spin. If placed at the position of the Sun, ldebaran would extend halfway to the planet Mercury and would appear 20 degrees across in our sky, making life on Earth quite impossible. Yet ldebaran may have its own "solar system." Recent, though still-unconfirmed, observations show that the star may be slightly shifting back and forth in response to a small body with a mass at least 11 times that of Jupiter and a two-year orbital period. We do not yet know if the body-- if it exists at all-- is a massive planet or a low-mass "brown dwarf," a failed star that is too small to run supporting thermonuclear reactions in its core. C8 at 83x. It is best to move the primary out of the field to see the companion. C11 at 115x. Diameter: = 10.0 feet. Separation: = 3.12 miles; C = 13.3 miles; D = 696 feet; E = 41.2 miles. Distance (LY): 65 Total luminosity (Suns): 350-34 -
STF 567 DS 3330; HD 29205; SO 94032 Position: 0437+1929 Rating: 5 D Magnitude Separation P Year Spectra Colors 8.90 G0 W 9.28 2.0 + 341 + 1997 W 1831: 1.4 @ 303. 95 measurements. C8 at 280x. It is difficult to resolve. Deep Sky Objects NGC 1647 Rating: 2 E Other Names: Melotte 26; Collinder 54; Raab 18; H VIII 8 stronomical League Program: Herschel 400 Club, Urban Deep Sky Club, inocular Deep Sky Club Position: 0446+1904 Type: Oc Class: II 2r Magnitude: 6.4 Dimensions: 45' Cluster population: 200 It is 144 million years old. The earliest spectral classes are 8 and 7. It lies 29,000 light years from the galactic center, and 500 light years south of its central plane. C8 at 65x. Very rich and grainy scattering of 8m and fainter stars. right and even spread, the brightest members are in the S area. Over 50 stars are visible, many of them multiple. C11 at 98x. Fills the 32 min FOV; bright and loose, the double G 111 dominates the center. I counted 53 stars. Easy - 35 -
Model (where the Sun is a baseball): Its diameter would be 7,160 miles, and its stars would be 605 miles apart. Distance (LY): 1,700 Luminosity (suns): 620 Difficult NGC 1615 Rating: 5 D Position: 0436+1957 Type: Gal Class: S0-: Magnitude: 13.6 Surface brightness: 13.6 Dimensions: 1.5' x 1' P: 115 C8 at 206x. There are two bright stars to the E (7.3m, 6.3m) you must get these out of the field first. It is extremely faint and required tube movement to verify its presence. I could see no details at all (not even a brightening of the nucleus) and it is by itself in the high power field. Distance (LY): 150,000,000 Total luminosity (Suns): 6,400,000,000 Radial velocity (km/sec): +3,371-36 -
Mini-Catalog Double Stars Designation Position Rating Map Component Mag Separation P STF 479 0401+2312 1E 1 C 6.52 7.47 9.40 8.0 + 57.7-123 - 57.7 - STF 494 0409+2306 1E 1 6.87 6.97 5.3 + 187 -. G. 311 0446+1910 2E 4 8.50 9.32 33.1 = 112 = STF 598 0449+1748 2E 4 8.10 9.96 9.3-317 - 5.89 OS 72 0408+1720 3E 2 ur 86 0416+2331 3E 1 STF 523 0420+2344 3E 1 62 Tau 0424+2418 3E 1 STF 545 0427+1812 3E 2 STF 546 0427+1907 3E 2 STF 482 0403+2208 4E 1 37 Tau 0405+2205 4E 1 STF 495 0408+1509 4E 2 STF 541 rej 0425+2212 4E 1 Hipparcos 568 0426+2348 4E 1 ergh 2 0430+1751 4E 2 STF 579 0442+2244 4E 3 Tau Tau 0442+2257 4E 3 LDS 2266 0443+1843 4E 4 C C C C C C D C C 9.68 9.63 10.23 13.48 7.60 9.80 8.92 6.34 8.18 12.20 6.94 9.57 7.69 9.53 8.95 10.53 4.36 10.27 12.15 6.02 8.97 9.65 10.00 8.12 10.46 6.90 8.94 8.72 10.89 4.24 7.02 7.12 9.92 10.20 4.7 + 4.2-26.6 10.1-108.6 + 29.1 + 110.5 18.0-6.7 = 13.7 + 134.0-235.1-3.8 + 5.0 + 184.3 156.8 29.1-109.6 + 16.8 + 62.7-100.0 141.7-328 + 51 + 26.6 164-108.6 + 291 + 336 57 = 182-124 = 193 + 235.1-222 + 331 + 184.3 156.8 3 + 9 = 40 + 214 + 102 103 = - 37 -
Designation Position Rating Map Component Mag Separation P Kustner 85 0447+2026 4E 3 9.64 10.14 32.5 + 32 + 96 Tau 0450+1554 4E 4 C 6.08 11.10 13.10 29.3-27.5 57 = 27.5 Larink 1 0456+2211 4E 3 9.19 10.72 15.1-212 - 5.89 pm 49 0401+1812 5E 2 39 Tau 0405+2201 5E 1 LDS 1161 0417+2240 5E 1 51 Tau 0418+2135 5E 1 Kappa 1 Tau 0425+2217 5E 1 71 Tau 0426+1537 5E 2 83 Tau 0426+1756 5E 2 Theta 2 Tau 0429+1552 5E 2 LDS 2246 0431+1612 5E 4 Sigma 2 Tau 0439+1555 5E 4 97 Tau 0451+1850 5E 4 STF 605 rej 0451+1522 5E 4 STF 611 rej 0454+2145 5E 3 Pourteau 504 0457+2423 5E 3 STF 559 0433+1801 1M 4 STF 562 0435+2242 3M 3 Scardia 26 0400+2122 4M 1 Hough 333 0443+2015 4M 3 36 Tau 0404+2406 5M 1 ur 309 0408+1944 5M 2 C a b a b C 10.94 5.90 11.50 12.09 9.77 11.18 5.64 10.27 4.21 5.27 11.90 12.20 4.49 11.59 5.40 11.30 3.40 3.84 4.78 6.50 4.67 5.08 5.08 10.44 10.91 10.85 9.18 11.60 9.26 11.87 6.24 6.29 6.78 9.82 9.94 11.63 10.19 10.30 10.84 5.46 12.20 7.69 10.97 169.2 + 173.9 +! 144.1 98.5-166.2-340.2 + 141.1+ 106.9 134.4-111.9 337.2 = 250.2 + 437.5 + 177.0 + 11.4 = 14.1-17.9-3.0 = 1.9-31.2 2.2 + 34.5 + 25.6 + 5.8 + 277 = 359-144.1 107-62 = 173 = 268+ 209 152 + 105 347 + 131 = 194 + 302-282 = 206-75 + 277-283 + 59 157-34.5 + 258 = 280 + - 38 -
Designation Position Rating Map Component Mag Separation P pm 60 0428+2137 5M 1 5.72 10.90 171.6 +! 236 + 89 Tau 0438+1602 5M 4 5.79 12.43 140.5-48 - ur 87 0422+2049 3D 1 5.91 8.39 1.9 = 169 = STF 499 0410+2407 4D 1 C D 9.55 9.63 11.21 9.11 1.5-30.1-90.6 + 289-30.1-90.6 + lpha Tau 0436+1631 4D 4 Scardia 28 0402+2140 5D 1 OS 82 0423+1503 5D 2 Delta 1 Tau 0423+1733 5D 2 Delta 3 Tau 0425+1755 5D 2 80 Tau 0430+1538 5D 2 STF 567 0437+1929 5D 4 ur 1237 0454+2333 5D 3 C D E F C 0.85 13.60 12.85 13.70 13.60 11.44 8.75 10.48 6.97 8.50 3.76 12.57 4.34 7.85 10.49 5.73 8.16 8.90 9.28 7.43 9.99 30.8 = 131 +! 1.3-40.6 287.4 + 28.5 1.3 + 112.2 + 1.9 + 76.2 + 1.6-2.0 + 4.7 + 111 + 131 +! 1.3-327 123-155 344 + 338 = 340 + 76.2 + 18 + 341 + 57 - Deep Sky Objects Specifications Surface Object Position Rating Map Type Mag r Population Hyades 0427+1600 2E 2 Oc (II 3m) 350 NGC 1647 0446+1904 2E 4 Oc (II 2r) 6.4 200 NGC 1554-5 0422+1932 5D 2 Gn 9.4 NGC 1615 0436+1957 5D 4 Gal (S0-:) 13.6 13.6-39 -