Zone 134, Master Map Normal View

Transcription

1 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 ω ' ' ' ' ' ο1 ρ π 05h 04m 04h 56m 04h 48m 04h 40m 04h 32m 04h 24m 04h 16m 04h 08m 04h 00m

2 , 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 Tau STF 499 STF Tau 37 Tau 39 Tau STF 482 Scardia 26 STF 479 Scardia ' ' ' ' ' ω2 04h 30m 04h 25m 04h 20m 04h 15m 04h 10m ur h 05m 04h 00m

3 , Map 1 Mirror Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. STF 479 STF 482 Scardia Tau 39 Tau Scardia Tau STF 494 STF Tau Hipparcos 568 STF 523 ur 86 υ LDS 1161 Kappa 1 Tauκ1 κ2 STF 541 rej pm Tau ur ' ' ' ' ' ω2 ur h 00m 04h 05m 04h 10m 04h 15m 04h 20m 04h 25m 04h 30m

4 , Map 2 Normal Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. NGC Hind's Variable Nebula Struve's Lost Nebula ε STF 546 STF Tau δ3 Delta 3 Tau ergh 2 δ1 Delta 1 Tau δ2 θ1 Hyades θ2 Theta 2 Tau ω1 ur 309 OS 72 pm ' ' ' ' ' 80 Tau 71 Tau γ OS 82 STF h 30m π 04h 25m 04h 20m 04h 15m 04h 10m 04h 05m 04h 00m

5 , 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 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 θ ' ' ' ' ' γ 71 Tau STF 495 OS 82 π 04h 00m 04h 05m 04h 10m 04h 15m 04h 20m 04h 25m 04h 30m

6 , 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 ' ' ' ' ' Kustner 85 Hough 333 NGC h 00m 04h 55m 04h 50m 04h 45m 04h 40m 04h 35m 04h 30m

7 , 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 Tau Pourteau 504 ur 1237 Larink 1 STF 611 rej ' ' ' ' ' Hough 333 Kustner 85 NGC h 30m 04h 35m 04h 40m 04h 45m 04h 50m 04h 55m 05h 00m

8 , 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 θ ' ' ' ' ' STF 605 rej Orion h3262 ρ 05h 00m 04h 55m 04h 50m 04h 45m 04h 40m 04h 35m 04h 30m

9 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 Tau STF Tau STF 605 rej ' ' ' ' ' ρ h h 30m 04h 35m 04h 40m 04h 45m 04h 50m 04h 55m 05h 00m

10 Index 54 Double Stars, 1 right Nebula, 2 Open Clusters, 1 Galaxy Flamsteed 36 Tau Tau Tau Tau Tau Tau Tau Tau Tau Tau Tau G lpha Tau ergh pm ur ur ur ur D Delta 1 Tau Delta 3 Tau H Hipparcos Hough Hyades...22 K Kappa 1 Tau...10 Kustner L Larink LDS LDS LDS N NGC NGC NGC O OS OS P Pourteau S Scardia Scardia Sigma 2 Tau...30 STF STF

11 STF STF STF STF STF 541 rej... 7 STF STF STF STF STF STF STF STF 605 rej...31 STF 611 rej...25 T Tau Tau...24 Theta 2 Tau

12 , Map 1 Double Stars Easy STF 479 DS 2926; HD 25201; SO 76388; H N 93 Position: Rating: 1 E Magnitude Separation P Year Spectra Colors V Y O C F0 IV? 1831: measurements. Hipparcos/Tycho data show different distances for these stars; they may be optical. C 1831: 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 -

13 STF 494 DS 3019; HD 26128; SO Position: Rating: 1 E Magnitude Separation P Year Spectra Colors IV W IV W 1828: 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 Position: Rating: 3 E Magnitude Separation P Year Spectra Colors 9.63 F5 W W C ? - 4 -

14 1875: 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): STF 523 DS 3131; HD 27335; SO Position: Rating: 3 E Magnitude Separation P Year Spectra Colors V W R C No 1829: measurements. C 1892: measurements. C8 at 104x. Moderate field. Diameter: = 1.25 inches. Separation: = 8.35 miles; C = 89.8 miles. Distance (LY): 530 Total luminosity (Suns):

15 62 Tau Rating: 3 E STF 534; DS 3179; HD 27778; SO Position: Magnitude Separation P Year Spectra Colors V Y V C ? C : 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 Position: Rating: 4 E Magnitude Separation P Year Spectra Colors 8.95 G0 Y = 1991 O 1830: measurements. C8 at 104x

16 37 Tau Rating: 4 E OS 558; G Struve 4 (C); HD 25604; SO Position: Magnitude Separation P Year Spectra Colors 4.36 K0 III Y! W C = 1923? 1853: measurements. C 1921: 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: Rating: 4 E Magnitude Separation P Year Spectra Colors V W W C No D No 1874: 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

17 Hipparcos 568 HD 27923; SO Position: Rating: 4 E Magnitude Separation P Year Spectra Colors V W bw 1891: 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): Tau Rating: 5 E OS 559; CHR 158 (a); HD 25680; SO Position: Magnitude Separation P Year Spectra Colors 5.90 G5 V Y ! Y C ? 1853: measurements.. variable? is optical. C 1 measurement. digitized sky survey plate ( ) shows 141. C11 at 115x

18 LDS 1161 HD ; Position: Rating: 5 E Magnitude Separation P Year Spectra Colors 9.77 K5 Y W 1892: 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 Position: Magnitude Separation P Year Spectra Colors 5.64 F0 V W = 1918 W? 1909: 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 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

19 Kappa 1 Tau 65 Tau; SI 9; HD 27934; SO Position: Rating: 5 E Magnitude Separation P Year Spectra Colors IV W = Y a ? b ? 1836: measurements. a 1909: 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): Moderate Scardia 26 SO Position: Rating: 4 M Magnitude Separation P Year Spectra Colors 9.94 W ? 1 measurement

20 C11 at 115x. Distance (LY): 85 Total luminosity (Suns): Tau Rating: 5 M ur 544; DS 2965; HD 25555; SO Position: Magnitude Separation P Year Spectra Colors V yw = 1927? 1877: 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 Position: Rating: 5 M Magnitude Separation P Year Spectra Colors 5.72 m W ! W? 1909: measurements. is a spectroscopic and occultation binary. C11 at 115x

21 Diameter: = 6.40 inches. Separation: = 41.8 miles. Distance (LY): 156 Total luminosity (Suns): 9.94 Difficult ur 87 DS 3158; HD 27639; SO Position: Rating: 3 D Magnitude Separation P Year Spectra Colors V+K3II W = 169 = 1991 O! 1875: 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 Position: Rating: 4 D Magnitude Separation P Year Spectra Colors 9.55 G0 yw W C W? D W 1833: measurements. C 1833: measurements

22 D 1891: 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 Position: Rating: 5 D Magnitude Separation P Year Spectra Colors 8.75 W ? 1 measurement. C11 at 115x. Distance (LY): 1,160 Total luminosity (Suns):

23 , Map 2 Double Stars Easy OS 72 DS 3006; HD 26038; SO Position: Rating: 3 E Magnitude Separation P Year Spectra Colors 5.89 K5 IIIb do!! d The primary is an infra-red source. 1854: 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 Position: Rating: 3 E Magnitude Separation P Year Spectra Colors 7.69 F5 V Y = G0 V? O 1822: measurements. The stars share a large common proper motion

24 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 Position: Rating: 3 E Magnitude Separation P Year Spectra Colors V W = 1992 V 1821: 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 Position: Rating: 4 E Magnitude Separation P Year Spectra Colors 6.02 F3 V W

25 1830: 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 Position: Rating: 4 E Magnitude Separation P Year Spectra Colors F8 W = 1991 G8 yw 1897: 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 Position: Rating: 5 E Magnitude Separation P Year Spectra Colors 5.89 F4 V W = 1951 W 1909: measurements. is a spectroscopic binary

26 C11 at 115x. Diameter: = 4.50 inches. Separation: = X=39.0 miles. Distance (LY): 148 Total luminosity (Suns): Tau Rating: 5 E pm 59; V777 Tau; HD 28052; SO Position: Magnitude Separation P Year Spectra Colors 4.49 F0 V W ? 1909: 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): Tau Rating: 5 E pm 63; HD 27962; SO 93923; H VI 101 Position: Magnitude Separation P Year Spectra Colors 5.40 F0 V W W 1 measurement

27 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 Position: Rating: 5 E Magnitude Separation P Year Spectra Colors III W = K0 II Y 1836: measurements. Star is a spectroscopic binary ( 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):

28 Moderate ur 309 DS 3010; HD 26063; SO Position: Rating: 5 M Magnitude Separation P Year Spectra Colors W W? 1875: 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 Position: Rating: 5 D Magnitude Separation P Year Spectra Colors 3.76 K0 III Y! = 1990? 1909: : measurements. The primary is a long-period spectroscopic and occultation binary. C11 at 115x

29 Diameter: = 46.2 inches. Separation: = 26.8 miles. Distance (LY): 153 Total luminosity (Suns): 57.4 OS 82 DS 3169; HD 27691; SO Position: Rating: 5 D Magnitude Separation P Year Spectra Colors 6.97 G0 V V G1 V 1843: 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: Magnitude Separation P Year Spectra Colors IV W ? C = 1988?

30 1938: measurements. is a spectroscopic binary and variable. C 1783: 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 ( ), 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 day period. C8 at 104x. Diameter: = 10.8 inches. Separation: = 2,317 feet; C = 17.6 miles. Distance (LY): 148 Total luminosity (Suns): Tau Rating: 5 D STF 554; DS 3264; HD 28485; SO Position: Magnitude Separation P Year Spectra Colors V Y W 1831: 13. Over 100 measurements. The orbital period is 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):

31 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: 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 Other Names: Hind's Variable Nebula; Struve s Lost Nebula Rating: 5 D Position: 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 urnham and arnard recovered it in 1890 with the 36" Lick refractor, but it was lost even to these two eagle-eyed observers in It has been visible to the eye since about 1899, but varying some in brightness

32 C8 at 65x. It is lit by T Tau, a variable that ranges in magnitude from 9.4 to It has two lobes, each with its own NGC number 1554 and 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 Position: Rating: 4 E Magnitude Separation P Year Spectra Colors 8.72 K7 III? do! R? 1831: 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):

33 Tau Tau 94 Tau; OSS 54; Hough 642; South 455; HD 29763; SO Position: Rating: 4 E Magnitude Separation P Year Spectra Colors V W : measurements. The primary rotates at 187 km/sec and is a spectroscopic binary with a 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: Rating: 4 E Magnitude Separation P Year Spectra Colors 9.64 F8 W F8 W 1896: 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):

34 Larink 1 HD 31329; SO Position: Rating: 4 E Magnitude Separation P Year Spectra Colors W W 1893: 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 Position: Rating: 5 E Magnitude Separation P Year Spectra Colors 9.18 G5 Y ? 1906: measurements. C11 at 115x. Diameter: = 20.8 inches. Separation: = 3.82 miles. Distance (LY): 174 Total luminosity (Suns):

35 Pourteau 504 HD ; Position: Rating: 5 E Magnitude Separation P Year Spectra Colors 9.26 W ? 1891: 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 Position: Rating: 3 M Magnitude Separation P Year Spectra Colors 6.78 F5 III W W 1830: measurements. Hipparcos gives different parallaxes (6.42 mas and 11.4 mas), so the pair is probably optical. C11 at 339x

36 Hough 333 DS 3399; HD Position: Rating: 4 M Magnitude Separation P Year Spectra Colors yw yw C = 1903 W 1891: measurements. C 1891: measurements. C11 at 339x. Distance (LY): 730 Total luminosity (Suns): 9.89 Difficult ur 1237 DS 3504; HD 31071; SO Position: Rating: 5 D Magnitude Separation P Year Spectra Colors 7.43 K0 Y ? 1891: measurements. C8 at 206x. Diameter: = 12.0 inches. Separation: = 1.41 miles. Distance (LY): 192 Total luminosity (Suns):

37 , Map 4 Double Stars Easy. G. 311 Rating: 2 E HD 30170; SO 94106? Position: Magnitude Separation P Year Spectra Colors W = 112 = 1991 ow 1870: 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 Position: Rating: 2 E Magnitude Separation P Year Spectra Colors 8.10 F2 W F2 d! 1828: measurements. 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!

38 Diameter: = 11.7 inches; = 13.0 inches. Separation: = 2.75 miles. Distance (LY): 190 Total luminosity (Suns): 2.2 LDS 2266 HD 29836; SO Position: Rating: 4 E Magnitude Separation P Year Spectra Colors 7.12 G5 Y K8 bw C No C = 1 measurement. C 1896: 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 Position: Magnitude Separation P Year Spectra Colors 6.08 K3 III W = 1925? C ? 1878: measurements. The primary is an infra-red emitter. -C measurement

39 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 Position: Rating: 5 E Magnitude Separation P Year Spectra Colors IV W = 1991 W 1955: 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 Position: Rating: 5 E Magnitude Separation P Year Spectra Colors Vn W 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: measurements. The stars show similar proper motions

40 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 Position: Rating: 5 E Magnitude Separation P Year Spectra Colors W = 282 = 1909 W 1909: 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): Tau Rating: 5 E V480 Tau; pm 70; HD 30780; SO Position: Magnitude Separation P Year Spectra Colors 5.08 F0 IV W! W 1909: measurements

41 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 Position: Rating: 1 M Magnitude Separation P Year Spectra Colors IVn W = W 1830: 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

42 89 Tau Rating: 5 M pm 65; HD 29375; SO Position: Magnitude Separation P Year Spectra Colors 5.79 F0 V W ? 1910: 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 Position: Magnitude Separation P Year Spectra Colors 0.85 K5 III ro! = dm2 bw C ! W? D No E No F W 1877: measurements. is an unclassified variable. C 1832: measurements. D 1888: measurements. E 1899: measurements. F 1 measurement

43 urnham found to be double-- 11m and 13.5m, 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 ". 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 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):

44 STF 567 DS 3330; HD 29205; SO Position: Rating: 5 D Magnitude Separation P Year Spectra Colors 8.90 G0 W W 1831: 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: 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

45 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: 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,

46 Mini-Catalog Double Stars Designation Position Rating Map Component Mag Separation P STF E 1 C STF E G E = 112 = STF E OS E 2 ur E 1 STF E 1 62 Tau E 1 STF E 2 STF E 2 STF E 1 37 Tau E 1 STF E 2 STF 541 rej E 1 Hipparcos E 1 ergh E 2 STF E 3 Tau Tau E 3 LDS E 4 C C C C C C D C C = = = = =

47 Designation Position Rating Map Component Mag Separation P Kustner E Tau E 4 C = 27.5 Larink E pm E 2 39 Tau E 1 LDS E 1 51 Tau E 1 Kappa 1 Tau E 1 71 Tau E 2 83 Tau E 2 Theta 2 Tau E 2 LDS E 4 Sigma 2 Tau E 4 97 Tau E 4 STF 605 rej E 4 STF 611 rej E 3 Pourteau E 3 STF M 4 STF M 3 Scardia M 1 Hough M 3 36 Tau M 1 ur M 2 C a b a b C ! = = = = = 173 = = = =

48 Designation Position Rating Map Component Mag Separation P pm M ! Tau M ur D = 169 = STF D 1 C D lpha Tau D 4 Scardia D 1 OS D 2 Delta 1 Tau D 2 Delta 3 Tau D 2 80 Tau D 2 STF D 4 ur D 3 C D E F C = 131 +! ! = Deep Sky Objects Specifications Surface Object Position Rating Map Type Mag r Population Hyades E 2 Oc (II 3m) 350 NGC E 4 Oc (II 2r) NGC D 2 Gn 9.4 NGC D 4 Gal (S0-:)