Messier 15

From DeepSkyPedia

globular cluster M 14 <<  Messier 15  >> M 16
Sketch by Vedran Vrhovac Dobson 300/1500,250X,
Position (epoch J2000) [1]
Constellation	Pegasus
Position	Ra 21:29:58.4 Dec +12:10:00
DSS images	10' · 20' · 30' · 45' · 1°
Appearance [1]
Apparent mag.	6.3
Size	12'
Class	4
Dreyer's description	! GC vB vL iR vsmbM rrr st vS
Other
Other designations	M 15, NGC 7078 and GCL 120
Notes
Edit this infobox

Messier 15 is a globular cluster in Pegasus.

Contents 1 How to find it 2 Appearance 2.1 Naked eye 2.2 Telescopes up to 70mm, binoculars up to 50 mm, and finders 2.3 Telescopes 71mm - 100mm (2.8" - 3.9"), binoculars 51mm - 70mm 2.4 Telescopes 101mm - 141mm (4" - 5.5"), binoculars 71mm - 100mm 2.5 Telescopes 141mm - 177mm (5.6" - 6.9") 2.6 Telescopes 178mm - 234mm (7" - 9.2") 2.7 Telescopes 235mm - 305mm (9.25" - 12") 2.8 Telescopes 306mm - 381mm (12.1" - 15") 2.9 Telescopes above 15" 3 Notes 4 References 5 Links

[edit] How to find it

Is is situated some 4° north-west of the 2.4-mag star Enif (Epsilon Pegasi, which makes it easy to find it in finder.

[edit] Appearance

M 15 is one of the most popular globular clusters among amateur astronomers, due to its brightness and position that makes is easy to find.

[edit] Naked eye

Using naked eye and direct vision, under 6.5-mag skies, Messier 15 can be seen as a fuzzy "star". No other details are visible^[2][3][4].

[edit] Telescopes up to 70mm, binoculars up to 50 mm, and finders

• M 15 with 12x45 binoculars by Ante Perković (SEEN, Jan 12 2003) [include this report]
• Messier 15 observation and sketch by Iiro Sairanen with 50/500 mm Galileoscope [include this report]
• (IAAC) Obj: M15 - Inst: ETX-60 [include this report]
• (IAAC) Obj: M15 - Inst: ETX-60 [include this report]
• (IAAC) Obj: M15 - Inst: 7x50 binoculars [include this report]

[edit] Telescopes 71mm - 100mm (2.8" - 3.9"), binoculars 51mm - 70mm

• (IAAC) Obj: M15, NGC7078 - Inst: StellarVue SV78S, 3" refractor, F6, 480mm FL [include this report]
• Pegasus by Steve Coe - Messier 15 with 11x80 finder and 13" f/5.6 [include this report]
• (IAAC) Obj: M15 - Inst: 9x63 binoculars [include this report]
• (IAAC) Obj: M15 - Inst: Vixen 9x63 binoculars [include this report]
• (IAAC) Obj: M15 - Inst: Vixen 9x63 binoculars [include this report]
• Messier 15 observation by Jeff Burton (x.astrogeek.org) with Oberwerk FMC Mini-Giant 12x60mm Binoculars, Orion Little Giant II 20x70mm Binoculars [include this report]
• (IAAC) Obj: M15 - Inst: Meade ETX 3.5" [include this report]
• (IAAC) Obj: M15 - Inst: 90mm ETX Spotting Scope [include this report]
• Messier 15 observation by Jeff Burton (x.astrogeek.org) with Meade ETX-90EC 90mm Maksutov [include this report]
• Messier 15 observation by Jeff Burton (x.astrogeek.org) with Meade ETX-90EC 90mm Maksutov [include this report]

[edit] Telescopes 101mm - 141mm (4" - 5.5"), binoculars 71mm - 100mm

• (IAAC) Obj: M15 - Inst: TV-102 (102mm f/8.6 APO refractor) [include this report]
• Messier 15 observation and sketch by Rony De Laet with Meade ETX 105 [include this report]
• M 15 with 4.5" (114mm) f/8 homemade dobson (babydob) by Igor Jelaska (SEEN, Oct 17 2003) [include this report]
• Messier 15 observation by Jeff Burton (x.astrogeek.org) with Meade DS-114EC 114mm Reflector [include this report]
• Messier 15 observation by Jeff Burton (x.astrogeek.org) with Orion AstroView 120ST 120mm Refractor [include this report]
• M 15 with 120mm f/8.33 refractor, eq. mount (Konus, Lukrica) by Ante Perković (SEEN, Jul 17 2004) [include this report]
• (IAAC) Obj: M15 (NGC7078) - Inst: Orion XT-8 1200mm f/6 dob [include this report]
• (IAAC) Obj: M 15 - Inst: Bresser 4.8" refractor, EQ5 mount [include this report]
• Messier 15 observation by Jeff Burton (x.astrogeek.org) with Orion Giant View 25x100 Binoculars [include this report]

[edit] Telescopes 141mm - 177mm (5.6" - 6.9")

• Messier 15 observation by Jeff Burton (x.astrogeek.org) with Orion SkyView Pro 6LT 150mm Reflector [include this report]

[edit] Telescopes 178mm - 234mm (7" - 9.2")

Small, bright elliptical core, with dimensions of 45" x 30", is surrounded by swarm of stars that can be clearly seen with averted vision. Whole cluster has about 5' in diameter, and with direct vision 12 stars are visible in it at 200x.^{[Citation needed]}

More reports:

• Messier 15 observation by Sjoerd Dufoer @ deepskylog.be (with Orion UK 20cm (200 mm)) [include this report]
• Messier 15 observation by Olivier Van Aelst @ deepskylog.be (with Celestron Advanced 200mm) [include this report]
• Messier 15 observation by Olivier Van Aelst @ deepskylog.be (with Celestron Advanced 200mm) [include this report]
• Messier 15 observation by Olivier Van Aelst @ deepskylog.be (with Celestron Advanced 200mm) [include this report]
• Messier 15 observation and sketch by Iiro Sairanen with Newton 200/1000 mm [include this report]
• (IAAC) Obj: M 15 - Inst: 200mm Newtonian [include this report]
• (IAAC) Obj: M 15 (NGC 7078) - Inst: 8" F/6 Newton on alt-az mount [include this report]
• (IAAC) Obj: M 15 - Instrument: 8" Orion Dobsonian [include this report]
• (IAAC) Obj: M 15 - Inst: 8" Discovery DHQ dob [include this report]
• (IAAC) Obj: M 15 - Inst: 8" Celestron SCT [include this report]
• (IAAC) Obj: M 15 - Inst: Celestar 8" SCT, Fork mount [include this report]
• (IAAC) Obj: M 15 - Inst: 8" f/10 SCT [include this report]
• Messier 15 observation and sketch by Jere Kahanpää with Newton 205/1000 [include this report]
• Messier 15 observation by Tom Polakis with 8", 13" and 20" [include this report]
• (IAAC) Obj: M 15 - Inst: 220mm f/5 Newtonian [include this report]

[edit] Telescopes 235mm - 305mm (9.25" - 12")

About 50 stars can be clearly seen at magnification of 250x. Many more can be perceived with averted vision. Central part has diameter of around 2', and core itself has dimensions of 42" x 18". Diameter of whole cluster is around 9'. Six star chains which are emerging from the core can be visible. Every chain is about 3' long.^{[Citation needed]}

More reports:

• (IAAC) 25cm Dobsonian, f/6, 48x, M15 [include this report]
• (IAAC) Obj: M15 - Inst: Orion 10" DSE F/5.6 [include this report]
• Messier 15 observation and sketch by Juha Ojanperä with Newton 250/1200 mm [include this report]

[edit] Telescopes 306mm - 381mm (12.1" - 15")

• (IAAC) Obj: M15 - Inst: 12.5" f/4.8 dobsonian [include this report]
• Messier 15 observation by Eric Van der Jeught @ deepskylog.be (with Orion Optics OD350S (350 mm)) [include this report]
• Messier 15 observation by Jeff Burton (x.astrogeek.org) with AstroSystems TeleKit 14.5" Reflector [include this report]
• Messier 15 observation by Jeff Burton (x.astrogeek.org) with AstroSystems TeleKit 14.5" Reflector [include this report]
• Messier 15 observation by Jeff Burton (x.astrogeek.org) with AstroSystems TeleKit 14.5" Reflector [include this report]
• Messier 15 observation by Jan Vanautgaerden @ deepskylog.be (with Obsession 15" (381 mm)) [include this report]

[edit] Telescopes above 15"

• (IAAC) Object: M15 Instrument: 16" Dobnewt [include this report]
• Messier 15 observation by David Erzeel @ deepskylog.be (with Obsession 18" (457 mm)) [include this report]
• Messier 15 observation by Wim De Meester @ deepskylog.be (with Obsession 18" (457 mm)) [include this report]
• (IAAC) Obj: M 15 - Inst: 82" F/13.65 [include this report]

[edit] Notes

Planetary nebula Pease 1 can be found in the cluster.

[edit] References

[edit] Links

ikipedia has an article on Messier 15