Astrophotography Related Articles Astrophotography Related Articles Here are some articles I've written on a few selected topics. Collimation of your telescope is very important for successful astrophotos. This is how I collimate my Ritchey-Chretien. Drift Alignment is the method I use to polar align my mount for long exposure astrophotography.
Filters are very useful for some types of astrophotography and visual work.
I've tried to explain the how and why of filters. The SBIG ST-4 autoguider has allowed me to do astrophotos of up to 3 hours. Previously my manual guiding time limit was one hour. I've related my experiences with the autoguider and some tips for its use. I modified the SBIG ST-4 autoguider for relayless operation because I had a sticking relay that caused many aborted astrophotos.