Re: need learning aids for astrophoto
On 5/5/2020 5:22 AM, Geof Lewis wrote:
...parting with the LX200 in favour of a pre-owned Astro-Physics AP1200I'll weigh in again with a few more comments about equipment, not learning aidss.
1. I agree 100% with how wonderful the AP1200 is. I too started imaging with a 10" LX200, then quickly moved to a 9.25" SCT on a GEM, then another GEM, and finally a second-hand AP1200 that I still use. It is a wonderful mount, and imaging with it is MUCH easier than with any of the other mounts I've used.
I use a separate guide scope and camera <http://astronomy.mdodd.com/observatory.html#Autoguiding> that typically yield guiding errors less than 1 arcsec with the AP1200.
2. IMO a DSLR is a good choice if you're just starting out. But I think buying a cooled CMOS astronomy camera is a better choice if your budget allows. Consider:
A) A CMOS camera is powered from the USB (usually USB 3.0) cable, not from an internal battery that might not last through an imaging session.
B) A cooled CMOS camera has lower noise than an uncooled DSLR.
C) ZWO offers an off-axis guider (OAG) that mounts in between the OTA and the imaging camera. A small lightweight (and inexpensive) camera screws into this OAG. You can easily add autoguiding without needing a separate guide scope and camera. (I use a separate guider for specific reasons related to my imaging goals.)
There's a lot to think about; I hope you're not overwhelmed.
Louisa County, Virginia USA