Category Archives: Star Clusters

The Moon and M13

The Moon on Jun 17, 2021.
M13 Globular Cluster. 20×180 sec, Gain 11, Offset 10, QHY183c at -10C, L-eNhance filter, AT60ED at F/4.8. Full field.
M13 Globular Cluster. 20×180 sec, Gain 11, Offset 10, QHY183c at -10C, L-eNhance filter, AT60ED at F/4.8.  Close-crop.

A quick outing before the weather got bad as a tropical storm hits from the Gulf.   I wanted to test the new T-adapter fittings I got for the AT60ED to attach the camera instead of using the 1.25″ eyepiece adapter, like I had to do for the first light images.

M35 Open Cluster on Jan 14, 2021

M35 Open Cluster – 26×180 sec @ gain 11, offset 100, QHY183c at -20C, Baader UHC-S filter, Televue TV-85 at F/5.6.

I was having a good night of steady seeing and really good guiding (<1.13 arc sec error) for this object and the Pleiades on this night.  I went until it was time to flip and the guiding was starting to degrade.   78 minutes worth of subs was good enough to show this object well.