Berkeley 58
From DeepSkyPedia
| Berk 57 << Berkeley 58 >> Berk 59 | |
|---|---|
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Please, help us find free binocular or telescope sketch of this object | |
| Position (epoch J2000) [1] | |
| Constellation | Cassiopeia |
| Position | Ra 00:00:13.5 Dec +60:56:43 |
| DSS images | |
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Appearance [1] | |
| Apparent mag. | 9.7 |
| Size | 8.0' |
| Class | II 1 m |
| Stars | 30 stars, the brightest is 15m |
| Other | |
| Other designations | Berk 58, Be 58, Lund 1 and OCL 277[1] |
| Notes | |
| | |
Berkeley 58 is an open cluster in Cassiopeia.
[edit] How to find it
About 2° NNW from Beta Cassee map:[2], there is a E-W orineted pair of 7-mag stars see map:[1]. Berkeley 58 can be found 15' SW from the western star in pair.
[edit] Appearance
It is a 8' diameter cluster with ~ 30 stars, with mags 13 and 14. The star field is very rich.
[edit] Telescopes up to 70mm, binoculars up to 50 mm, and finders
[edit] Telescopes 71mm - 100mm (2.8" - 3.9"), binoculars 51mm - 70mm
The cluster can be seen in 76-mm refractor as a faint nebulous patch[3]. In 9x63 binoculars, the cluster is hard or impossible to see[4], probably due to low power.
[edit] Telescopes 101mm - 141mm (4" - 5.5"), binoculars 71mm - 100mm
[edit] Telescopes 141mm - 177mm (5.6" - 6.9")
[edit] Telescopes 178mm - 234mm (7" - 9.2")
In 8" telescopes, at 40x, the cluster is seen as a mottled glow, with no stars resolved.[5]
At powers between 80x and 150x, some faint individual stars (mags 13 and 14) pop up over part or the entire cluster, depending on observing conditions. Up to 20 stars can be seen, covering the area between 4' and 8'. The background glow can still be seen, either as one round glow, cca 6' in diameter, or as a few nebulous patches.[5][6][7]
[edit] Telescopes 235mm - 305mm (9.25" - 12")
[edit] Telescopes above 12"
In 14" to 16" telescopes, at powers around 150x, Berk 58 is dense cluster of mostly faint stars, not well detached from the background. Around 20 stars can be seen with direct vision, but using averted vision should help resolve many fainter stars. The stars are arranged in several arcs that emanate from the center. Shape of the cluster might appear roughly rectangular.[8][9]
[edit] Notes
Berkeley 1 is first in 2°-long linesee map:[1] of clusters that extends further to the NW. Those are Berkeley 58, NGC 7790 (20'), NGC 7788 (40'), Frolov 1, Harvard 21 and King 12.
Open cluster NGC 7795 is 30' S.
[edit] Refernces
- ↑ 1.0 1.1 1.2 1.3 1.4 Berkeley 58 map and page @ messier45.com
- ↑ Hawaiian Astronomical Society: Cassiopeia -- Wide Area Map
- ↑ [1] + Small Cassiopeia clusters, TV76, 11/14/2004 , Florian (stargazing.com) , Tele Vue 76 refractor , d=76mm , f=480mm , 11/14/2004 , Open desert east of Indio, California , LM: ? , seeing: ?
- ↑ (IAAC) Obj: Berk 58 - Negative report - Inst: Vixen 9x63 binoculars , Stéphane Meloche , Vixen 9x63 , 2006/09/01 , Coaticook (Qc), Canada , LM: 5.8
- ↑ 5.0 5.1
Berk 58 (sketch and report) , Jere Kahanpää , Newton , d=205mm , f=205mm , 80x , 22./23.8.1996 , Hartola, Finland , LM: 6.2 , seeing: 2-3 - ↑ (IAAC) Berkley 58, NGC 7790, NGC 7788 , Yann Pothier , Meade , d=203mm , f=2030mm , 87x, 145x , 27 December 92 , La Clapiere Obs. (France) , LM: 5.6 , seeing: 2/5
- ↑
Berk 58 (sketch and report) , Jaakko Saloranta , SkyQuest , d=8" , f=8" , 122x , 13./14.11.2004 , Rajakylä, Vantaa, Finland , LM: 5.7 , seeing: 2
- ↑ x.astrogeek.org , Jeff Burton , AstroSystems TeleKit 14.5" Reflector , 167x , October 13, 2007 , Pennyrile State Park, KY, USA , LM: 6.0 , seeing: Antoniadi: II/III
- ↑ x.astrogeek.org , Jeff Burton , Starmaster 16" Reflector , 130x , October 5, 2005 , Pennyrile State Park, KY, USA , LM: 6.5+ , seeing: Antoniadi: II
[edit] Links
- Berkeley 58 with 4.5" (114mm) f/8 homemade dobson (babydob) by Ante Perković (NOT SEEN, Dec 13 2003) [include this report]
- Berkeley 58 observation and sketch by Jaakko Saloranta with 8" Orion DSE [include this report]
- Berkeley 58 observation and sketch by Eric Van der Jeught @ deepskylog.be (with Orion Optics OD350S (reflector 350mm/1645mm)) [include this report]
