I already have a 2 inch 3-nanometer Hydrogren-alpha (Ha) filter, and today UPS dropped off the other two, Sulfur 2 (SII) and Oxygen 3 (OIII) filters, both 3nm narrowband. It's almost as if my birthday is a week away. (A little more than a week, actually).
It's a big jump from the ASI1600MM-Pro, going from a 4/3s size sensor to an APC-C at 26MP, which requires larger LRGB and narrowband filters. They're a bit pricier, but I have decided to go all the way to 2" mounted filters (or 50.4mm unmounted), anticipating a future jump to a full frame monochrome astro camera.
Setting up two refractors, the William Optics GT81 (right) and William Optics SpaceCat 51 (left). I'm running monochrome with 3nm filters on the SpaceCat and RGB color on the GT81. It's beautiful out there now, but into the evening the forecast is calling for a solid cloud cover. I'll be ready if there's a decent break in the clouds!
Well, we had a good run of clear night skies last week, and here we are heading toward the new moon, and it's going to rain for three or four days. Anyway, it was great while it lasted. Taking very long exposure images with a telescope, and by long exposure I'm talking the shutter open 5 minutes for each frame. Every image I captured over the last five clear nights has been through this 8 inch Newtonian scope (8 inch primary mirror (203mm) inside the tube where the gold foil cap covers the end, the secondary mirror is where the camera connects to the focuser, toward the top of the scope). And I ran every night's imaging session with the ZWO ASIAir controller.
Trying something new tonight. So far, I've only used the ZWO ASIAir Plus with the AM5 mount and my William Optics scopes. So, I'm setting up the Sky-Watcher EQ6R-Pro and the 800mm Newtonian for narrowband, and decided to try out the ASIAir with this combination of gear. It has every feature I use with NINA (my normal astro controller system), that's polar alignment, plate solving, sequenced capture, guiding, so should work well!
I'm hoping for some clear skies tonight, enough to test out the #ZWOAM5 with my trusty William Optics GT81 and the ZWO ASI071 cooled color camera. It's a beautiful fall day out there right now, at quarter after 5pm, but I don't think this is going to last into the evening.
Just wanted to document the spacing and backfocus distance for the ZWO ASI1600MM-Pro with the electronic filter wheel and OAG. The William Optics SpaceCat 51 allows a maximum distance of 57.9mm to achieve minimum focus, so I like to be somewhere close to 50mm when everything is totaled up--and looking good:
I am using a fanless Windows 10 machine and a Pegasus Astro Pocket Powerbox to run my ZWO AM5 mount. Both of these are mounted to a SmallRig cheese plate with 3M Command Strips (I like these better than Velcro).
MeLE Quieter2Q Fanless Windows 10 PC with J4125 CPU, 8GB RSM 128GB Storage
Pegasus Pocket Powerbox
SmallRig Multi-Functional Cheese Plate
Sprig Cable Management Device
SVBONY Dovetail Base 32mm wide