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.

Christmas Tree Cluster and The Cone Nebula

Christmas Tree Cluster and Cone Nebula – 183×30 sec, gain 42, offset 42, and 49×120 sec in 2 runs, 30×120 and 19×120. Bortle Red zone metro conditions, but clear and above average transparency skies. Seeing was average. QHY183c camera cooled to -15C. gain 20, offset 100, an L-eNhance filter and Televue TV-85 at F/5.6. Sharpcap 3.2 for acquisition. Taken Dec 1, 2020 during a full moon night.