M67 – Open Cluster in Cancer (The Crab)

Telescope: Meade LX50 Mak 7 at f/15, Orion Atlas EQ-G
Camera: ZWO ASI071MC, Orion Imaging Skyglow Filter
Sensor Temperature: -10C, Gain: 300, Offset: 50
Guide scope: Astro-Tech 60mm, Meade DSI Pro II, PHD
Exposure: 83x120sec saved as FITS
Darks: 32x120sec saved as FITS
Flats: 32x30sec, LED tracing tablet
Average Light Pollution: Red zone, poor transparency
Lensed Sky Quality Meter: 18.4 mag/arc-sec^2
Stacking: Mean with a 2-sigma clip.
White Balance: Nebulosity Automatic
Software: Nebulosity, Deep Sky Stacker, Photoshop

This is one of my favorite modest open clusters. M67 lays off to the east of the much larger and brighter M44 (The Beehive) and it is a bit harder to find, but worth the effort. It is one of several wonderful deepsky objects that I ‘discovered’ during my first Messier Marathon almost 40 years ago and has since become one of my favorite star-hopping destinations.

Note that this is nearly a full-frame crop illustrating that while the field of the view of the Mak 7 is relatively narrow, it is also very flat with little, if any, coma. It is this characteristic that interests me in using this scope for deep sky imaging.

Further tests are necessary…


NGC2682 (11-8-2017)-1j.jpg