I am from Kuala Lumpur, Malaysia, totally new in telescope and Astro photography, but been seriously committed & spending money on this hobby since 2 months back, after accidentally saw Jupiter with its 4 moons, using my 20x80 binoculars (bought it a year ago but had never use it for night sky, instead been using it for terrestrial long distance viewing). That discovery of Jupiter had made me been so excited to see what else that I could find on the night sky.
Immediately, the next day on 21 July’21, I called up the store that sold me the binoculars, to ask for beginners’ telescope and bought 8” GSO dobsonian which made me even excited with the night sky objects. Could nicely see Jupiter, Saturn and many more stars. But was not feeling satisfied as I found it, so time consuming to manually and visually push the scope to find objects. Being a new person in this hobby, the immediate frustration was then…not knowing whether the star that the scope was pointing at, was the correct star that I tried to figure out via stellarium website and not able to ‘lock’ the objects long enough in the eyepiece… as the sky moves. Since the ‘accidental discovery’ of Jupiter.. I have been reading lots & watching YouTube for more informative and product reviews.
On 26 August’21, I received delivery of new telescope from B n H photo from New York to my house in Kuala Lumpur, Malaysia within 4 working days which was very fast (very reliable international store as I had ordered from them other products previously). I had to order from New York, as my local store in Malaysia had to back order and the same package will only be available in next 8-14 months due to global shortage & market manufacturing supply chain issues.
I ordered a package from B n H photo, a Celestron 8” EdgeHD with CGEM II mount. Been happy with it that I can now confidently identify the stars and the Nexstar’s Night Tour feature to see lots more objects.
Then on 15 September, I ordered ZWO 533MC-Pro, ZWO 120MC-s as guide camera, ZWO ASIAir Pro, ZWO Off axis guider, Optolong L-extreme and L-Pro filters and ZWO 2” filter drawer.
My location is in city area, I presumed it is in bortle 7/8, capturing from above my roof top about 10 meters from the ground.
Been going through a very steep learning curve and many sleepless nights with very limited clear sky/short viewing window time/night (location here is very cloudy), to quickly understand how to use all these equipments.
So far been on trial and errors to go through step by step to properly setup and understand how those equipments work with ASI AirPro.
Frankly speaking, I have yet to understand, what would be the reasonable settings, based on my above mentioned equipments, on the following (assuming trying to image M31):
1. The ‘minimum’ sub exposure time for my lights frames,
2. Given such a difficult sky with limited windows of between 2-3 hours/lucky clear sky night and thus far clear sky only happened once in 4-7 days (due to current raining seasons here), what would be my realistic deep sky targets ie. Focus on stars instead of nebula? Or will I still able to capture fair image of M31 for 2-3 hours of lights?
3. Thus far, I am no successful to link up my ASIAir Pro with USB connected to the bottom of the Nextstar+ hand controller to be able to use Goto function from ASIAir Pro.
4. As such, been guiding using on Camera ST4 from 120MC-s to CGEM II guide port. No issue with that ST-4 guide port setup and the mount Goto will slew to the object almost perfectly using the handcontroller, but the tracking when guiding, was not in synchronized with the target star as per crosshairs preview in ASIAir Pro. The images previewed / saved, under “Autorun” after each subs of 30 seconds, showed trails or oblong star.
5. Any settings that I need to pay particular attentions on ASIAir Pro and the CGEM II hand controller?
Truly appreciate any advice on the above.