Messier 30
From DeepSkyPedia
| M 29 << Messier 30 >> M 31 | |
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| Position (epoch J2000) [1] | |
| Constellation | Capricornus |
| Position | Ra 21:40:21.9 Dec -23:10:45 |
| DSS images | |
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Appearance [1] | |
| Apparent mag. | 6.9 |
| Size | 11' |
| Class | 5 |
| Dreyer's description | ! GC B L lE gpmbM st 12...16 |
| Other | |
| Other designations | M 30, NGC 7099, ESO 531-SC021 and GCL 122 |
| Notes | |
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Messier 30 is a globular cluster in Capricornus.
[edit] How to find it
An 8-mag star is 25' WSW from the cluster's center.
[edit] Appearance
[edit] Telescopes up to 70mm, binoculars up to 50 mm, and finders
[edit] Telescopes 71mm - 100mm (2.8" - 3.9"), binoculars 51mm - 70mm
In 80mm scope or 60mm binoculars, at low power (9 to 12x), the cluster is easily visible. It is small, concentrated, round diffuse ball with no distinct core visible. Averted vision will propably not help to see any more details. [2] [3][4][5]
[edit] Telescopes 101mm - 141mm (4" - 5.5"), binoculars 71mm - 100mm
In 4.5" telescopes, at low power (28x to 53x), under dark skies (LM=6.5), the cluster appears as a bright round fuzzy ball, 2' in diameter, having almost small or pointlike core and fading out slowly towards the edge. Any structure can be hard or impossible to see.[6][7]
At cca 100x, averted vision will show weak granulation[8], and raising power to 150x will help to resolve a few stars, especially around the W-NW edge. At 150x, the core is bright, round and dense, while the halo is faint, irregular, and circular. The cluster might look somewhate flattened on the SE edge.[9]
More reports:
- M 30 with 4.5" (114mm) f/8 homemade dobson (babydob) by Ante Perković (SEEN, Aug 17 2004) [include this report]
- M 30 with 4.5" (114mm) f/8 homemade dobson (babydob) by Ante Perković (SEEN, Aug 22 2004) [include this report]
[edit] Telescopes 141mm - 177mm (5.6" - 6.9")
[edit] Telescopes 178mm - 234mm (7" - 9.2")
In 8" telescopes, at 110 to 130x, M30 appears as a round, bright, large, loose globular cluster. The core is bright and very small, while the halo is large, with dozens of barely resolved stars (more on northern edge).[10][11]
More reports:
- M 30 with 8" (203mm) f/6 dobson homemade (by Beri) by Ante Perković (SEEN, Jul 17 2004) [include this report]
- M 30 with 8" (203mm) f/5 dobson (Orion Skywatcher) by Ante Perković (SEEN, Aug 21 2009) [include this report]
- Messier 30 observation by Tom Polakis with 8", 13" and 20" [include this report]
[edit] Telescopes 235mm - 305mm (9.25" - 12")
- Messier 30 observation by David Erzeel @ deepskylog.be (with Sky-Watcher 10" dobson (250 mm)) [include this report]
- Messier 30 observation by David Erzeel @ deepskylog.be (with Sky-Watcher 10" dobson (250 mm)) [include this report]
- Messier 30 observation by David Erzeel @ deepskylog.be (with Sky-Watcher 10" dobson (250 mm)) [include this report]
-
Messier 30 observation and sketch by Juha Ojanperä with Newton 110/805 mm and Catadioptric 280/2750 mm [include this report]
[edit] Telescopes 306mm - 381mm (12.1" - 15")
- (IAAC) Object: M30 - Instrument: 13.1" Dobson [include this report]
- Capricornus by Steve Coe - Messier 30 with
11x80 finder and13.1" f/5.6 [include this report] - Messier 30 observation by Paul Kemp (Southern Sentinel) with 13.1" f/5 Dobsonian (15th August 2006) [include this report]
- Messier 30 observation by Jeff Burton (x.astrogeek.org) with AstroSystems TeleKit 14.5" Reflector [include this report]
- Messier 30 observation by Jeff Burton (x.astrogeek.org) with AstroSystems TeleKit 14.5" Reflector [include this report]
- Messier 30 observation by Jan Vanautgaerden @ deepskylog.be (with Obsession 15" (381 mm)) [include this report]
[edit] Telescopes above 15"
- Messier 30 observation and sketch by Iiro Sairanen with Newton 406/1830mm [include this report]
- (IAAC) Obj: M30 (NGC7099) - Inst: 17" f/15 classical Cassegrain [include this report]
- Messier 30 observation by Olivier Van Aelst @ deepskylog.be (with Obsession 18" (457 mm)) [include this report]
- Messier 30 observation by David Erzeel @ deepskylog.be (with Obsession 18" (457 mm)) [include this report]
- Messier 30 observation by Wim De Meester @ deepskylog.be (with Obsession 18" (457 mm)) [include this report]
- (IAAC) Obj: M30 (NGC 7099) - Inst: 51cm f/10 classical Cassegrain [include this report]
[edit] Notes
[edit] References
- ↑ 1.0 1.1 Historic NGC and IC by Wolfgang Steinicke (version Nov. 20, 2006.)
- ↑ Capricornus by Steve Coe - M 30 , Steve Coe , 11x80 finder and 13.1" f/5.6 dobson , 11x, 100x, 220x, 330x
- ↑ x.astrogeek.org , Jeff Burton , Oberwerk FMC Mini-Giant 12x60mm Binoculars , June 16, 2001 , Paducah, KY, USA , LM: 4.5 , seeing: 8/10
- ↑ (IAAC) M 30 , Stéphane Meloche , 9x63 , 2004/08/22 , Ste-Catherine-de-Hatley, Qc, Canada , LM: 5.9
- ↑ (IAAC) M 30 , Stéphane Meloche , 9x63 , 2006/08/26 4h30 , Ste-Catherine-de-Hatley, Qc, Canada , LM: 5.8
- ↑ M 30 with 120mm f/8.33 refractor, eq. mount (Konus, Lukrica) by Ante Perković (SEEN, Jul 17 2004) [include this report]
- ↑
deepskylog.be , Sjoerd Dufoer , 4.5" f8 , 36x , Jun-29-2001 , Port Lesney, Jura, France , LM: 6.3 , seeing: 7/10
- ↑
Messier 30 (sketch and report) , Juha Ojanperä , Newton 110/805 mm, Catadioptric 280/2750 mm , 96x, 183x , 27/28.8.2005, 31/1.9.2005 , Ulvila, Finland, Ulvila, Finland , LM: 6.2, 6.3 , seeing: 3, 2
- ↑ (IAAC) M 30 , Brent Reary , 4.5" f/4.0 Newtonian reflector , 150x , 09/24/06 , Rolla, MO USA (Lat 37 57'N) , LM: 6.5 , seeing: 6/10
- ↑ x.astrogeek.org , Jeff Burton , Meade LX200GPS 203mm SCT , 111x , August 4, 2002 , Paducah, KY, USA , LM: 6.5 , seeing: 9/10
- ↑
Messier 30 (sketch and report) , Jere Kahanpää , Newton , d=205mm , f=205mm , 133x , 4./5.8.1992 , Öland, Sweden , LM: 6.0 , seeing: 3
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