Newbie question - Celestron AVX DSLR only mount
Posted 01 September 2013 - 09:27 PM
Astronomy was a hobby of mine a long time ago when laptops and SLR's were very expensive. I have an old Nexstar 114SLT telescope that I used for a while until life got complicated and it ended up in a box in the basement. I always wanted to get into astrophotography but could not afford a laptop or slr back in those days.
Since then I have a laptop and a Canon 5D mark II with several L series lens'. I have been thinking of jumping back into astromony with both feet. I feel my old Nexstar SLT will not cut it for my needs/wants.
So i have been looking at getting the Celestron AVX 8" EdgeHD combination. The thing is, the price is still a bit out of my range. So what I have been considering is going with the mount alone fist and using it to guide my DSLR for some wide field stuff.
I am wondering if it would be possible to mount my old Nexstar 114SLT OTA to the AVX mount and then piggy back my DSLR for now and then later upgrade the OTA. If not, could I mount the DSLR on there alone?
I have searched the internet for an answer but couldn't really come up with a clear answer or the equipment I would need to do what I want.
Any help or guidance would be greatly appreciated.
Posted 01 September 2013 - 09:46 PM
You could even just get a plate for your camera, screw it to the plate, and use your lenses unguided until you have the funds to get a guider and move up from there.
Tons of cheap options, and welcome to CN
Posted 02 September 2013 - 01:17 AM
I have been experimenting with some wide feild photography on my regular tripod, but like to get into some longer exposures and eventually some deep sky stuff. I have a 6 year old daughter so I would like to get a decent OTA eventually also for some visual observing.
The money isn't a big issue. The diffrence between $1799 for the AVX with 8" EdgeHD and the $799 for the AVX alone is a big differance. I have no trouble getting the mount now. Also, I would have a hard time finding the CG-5 used in my area and I don't feel comfortable spending that much on something used over the internet.
So the "yup" is for everything? I can mount my old 114SLT on the AVX mount. What would I need for this? I know the AVX uses the dovetail mounting system. How would I attach a dovetail bar on my 114SLT OTA?
Posted 02 September 2013 - 01:32 AM
Posted 02 September 2013 - 02:19 AM
Getting the 6" newtonian may be a no-brainer because I think it uses tube rings, these usually have a camera tripod thread attachemnt so you DSLR should piggy back on top easily.
The dovetail is fixed to the side of the SLT OTA and is not adjustable.
Posted 02 September 2013 - 04:28 PM
But I agree the 6" newtonian for the extra $100 seems like the best option. I can then upgrade in the future if I like.
Posted 02 September 2013 - 07:03 PM
I'm just going off your comments on looking for the cheapest intro to DSLR astrophotography. You'll find that 6" newt is not user friendly for AP and an AVX vs. a CG-5 are almost the same mount.
But, I would buy a used one in a heart beat. They have been solid performers for many years now. Take a look over on Astrobin (search for CG-5) and you'll see how successful people can be with it.
Or, buy the new shiny mount and OTA .
Posted 02 September 2013 - 07:31 PM
This should fit the AVX counterweight shaft, which I am pretty sure is 20mm (same as CGEM and CG-5).
Posted 03 September 2013 - 08:56 AM
Posted 05 September 2013 - 02:52 AM