JayTee wrote: ↑Fri Nov 22, 2019 3:19 am
Hi,
This is kind of a repeat post but I think this new accessory demands a post that shows how you how to achieve my new PA setup.
I currently own a ZWO ASI120MC and wanted to use it to accomplish a polar alignment (PA) in either SharpCap or PHD2. The problem being is that this sensor is so small that its FOV is also very small. The FOV is not big enough to take in enough sky to use the PA function in either SharpCap or PHD2. Even when using a 400mm FL guide scope (my shortest one). You can't use a DSLR for this function either. I've seen just a few posts around the internet where the poster attached a webcam to a DSLR lens with a specific adapter. To me, this seemed the only solution. It just so happens that ZWO sells just such an adapter to connect your Canon EOS EF lenses (they also have them for Nikons) directly to a ZWO camera. It's pretty simple, just get this part:
https://astronomy-imaging-camera.com/pr ... t2-adapter
ZWO Lens3.jpg
Affixing it to your mount is another issue that has already been covered in a previous post.
Hope this helps.
Cheers,
JT
You can use a
DSLR for that. Use a 30 sec
RA rotation to mark the center of rotation with a pierced piece of tape on your
DSLR LCD. Then move the pierced hole to the
NCP taking 3 second images with the Alt Az controls, using little known asterisms. It is the same idea as Sharpcap just without a computer.
... Henk.
Telescopes: GSO 12" Astrograph, "Comet Hunter" MN152, ES ED127CF, ES ED80, WO Redcat51, Z12, AT6RC, Celestron Skymaster 20x80,
Mounts and tripod: Losmandy G11S with OnStep, AVX, Tiltall,
Cameras: ASI2600MC, ASI2600MM, ASI120 mini, Fuji X-a1, Canon XSi, T6, ELPH 100HS,
DIY: OnStep controller, Pi4b/power rig, Afocal adapter, Foldable Dob base, Az/Alt Dob setting circles,
Accessories: ZWO 36 mm filter wheel, TV Paracorr 2, Baader MPCC Mk III, ES FF, SSAG, QHY OAG-M, EAF electronic focuser, Plossls, Barlows, Telrad, Laser collimators (Seben LK1, Z12, Howie Glatter), Cheshire, 2 Orion RACIs 8x50,
Software: KStars-Ekos, DSS, PHD2, Nebulosity, Photo Gallery, Gimp, CHDK,
Computers:Pi4b, 2x running KStars/Ekos, Toshiba Satellite 17",
Website:Henk's astro images