March 4th. I have been imaging a few star clusters lately. Two are shown here from last nights viewing. Both pics are single exposures of 25 sec x 6400 iso with a Canon 1200d camera thru a LX600 10" scope (Alt Az).
First is of NGC 3293 in Carina. The brightest stars are blue supergiants.
Second pic is of C85 (IC2391) in Vela and is known as the Omicron Velorum Cluster. It is much larger and more open than the first cluster. The brightest star is Omicron Velorum which is a Beta Cephei type variable.
The two bright counterparts each have one or more companions.
I included both pics because they are so different. Thanks for viewing.
John W.
Hi John, Noise is horrendous with DSLRs at this time of year. Can I suggest that you use 1600 instead of 6400 on star clusters?
If you use 400 or 800 and stack say 20 frames, you'll get far less noise
and plenty of stars in the field.
raymo
