Hemisphere:  Northern  ·  Constellation: Ophiuchus (Oph)  ·  Contains:  Cheleb (βOph)  ·  IC 4665  ·  The star Cebalrai
Cebalrai vicinity, 


Cebalrai vicinity
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Cebalrai vicinity

Technical card

Imaging telescopes or lenses: Stellarvue SV50ED

Imaging cameras: Sony NEX-3n

Mounts: SkyWatcher Star Adventurer  ·  Sirui EN-2004

Software: Photoshop  ·  DeepSkyStacker 3.3.2 DSS 3.3.2

Dates:June 1, 2017

Frames: 28x30" ISO1600

Integration: 0.2 hours

Darks: ~10

Flats: ~9

Bias: ~20

Avg. Moon age: 7.35 days

Avg. Moon phase: 49.70%

Basic astrometry details

Astrometry.net job: 1600691

RA center: 17h 45' 39"

DEC center: +5° 28' 22"

Pixel scale: 2.996 arcsec/pixel

Orientation: 59.243 degrees

Field radius: 2.462 degrees

Resolution: 4928x3276


Cebalrai and IC 4665 in Ophiuchus, showing what I can do with a 50mm APO, small tracking mount, and a lightweight camera. Good bit of coma at the edges, but Cebalrai and the cluster are nice.


Sky plot

Sky plot


Cebalrai vicinity, 



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