Archive for planets

Dobsonian Astrophotography

Posted in Astrophotography with tags , , , , on 2009/05/14 by computerphysicslab

Question: I have a 14 inch dob and interested in taking photos with it. Do I really need tracking?

I have a Dobsonian Meade Lightbridge 16-inch and I am also trying to do astrophotography with it. This is a challenge. The Moon is the easiest target for a Dob. Tracking is not compulsory to take good images of the Moon. Next target may be planets. Here it is my last image of Saturn through my Dob:

Saturn improved

Next target would be bright stars and clusters. And the most difficult target of all is deep-sky astrophotography. With no tracking system you have to use some tricks to get deep sky images. I am using shift-and-add technique with moderate results.

My focuser does not let me to use my DSLR camera at prime focus, so I am using afocal method through low power eyepieces. You don’t have to spend much money to do this kind of photographic experiments. Patience and effort sometimes give more satisfaction that a lot of money expended in sophisticated equipment.