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Hi there! I am seeking for advice from you good people.
I want to create a setup for stargazing which is fully automated. Ideally every process like scope calibration, guiding, tracking, focusing and taking photos should be done through WiFi, preferably from an iPad tablet.
Planetary imaging is the main purpose. I don't really care about deep space imaging.
I want the whole setup to be rather cheap, small and light, at the expense of imaging quality.
I am a total noob (used to play with an ETX-70 lots of years ago), but I really need the functionality I have described above.
I am thinking of using the bellow components and kindly request that you correct/add to the list:
1) AstroFi 102
2) A ZWO camera suitable for planetary imaging (any ideas for less than or equal to $250)
3) An auto focuser and motor drive (any ideas)
4) Smth like an ASi air device?
Is a guider necessary for planetary imaging, by the way?
Do you think I am in the right path?
I still have not been able to really comprehend the full picture. Is what I am asking for doable?
Thank you very much in advance!
I am intending to buy a Sky-Watcher Skymax-127 Maksutov-Cassegrain, primarily to make a number of daytime photographic terrestrial observations ranging from 1-5.5 miles, the most distant of which is of a target at 5.5 miles that is about 5 feet in size. The distant target would have an angular size of about 0.01 degrees. To get an object of an angular size of 0.01 degrees to appear as 100pixels vertically on the APS-C sensor (22.3mm x 14.9 mm) of my Canon EOS 250D camera, I would need a telescope/lens with a focal length of about 2.1m. The Skymax 127 with a focal length of 1500mm is pretty close to the required value and if used in combination with a Barlow lens I would be able to get more than the focal length I require.
The FOV of the Skymax-127 with its 1500mm focal length in combination with the vertical sensor size of 14.9mm gives a field of view that can be derived from the following attached diagram
which gives a FOV of 0.569°.
But I would also like to make some lunar and solar observations with my system and capture images of the complete objects, and the maximum angular size of the Moon at perigee is 0.568°, so in theory the FOV of my system at 0.569 should be sufficient to gather the whole of the Moon at its largest angular size.
But I have seen a video in which someone is using a Celestron SE6, which also has a focal length of 1500mm and when using it with a Canon 60da camera with an ASP-C sensor https://www.dpreview.com/products/canon/slrs/canon_eos60da which has the same size sensor as mine, then the camera does not seem able to capture a full view of the Moon. The video is at https://www.all-startelescope.com/video/scope-setup/nexstar-6se-dslr . The section where the Canon 60da is used is just before the end of the video and a clipped moon is shown, and then a full sized sensor camera is used to capture the whole Moon.
Does this video not suggest that my camera with its APS-C sensor coupled with the Skymax 127 with its 1500mm focal length would not be able to capture the whole Moon, despite my calculations suggesting that it would?
I understand that a reducer does not work well with a Muksatov-Cassegrain, so if I buy this telescope and use it in conjunction with my Canon250D, am I doomed never to be able to get an image of the complete moon?
Thanks in advance for any suggestions/help etc
which webcam is best for planetary imaging under 25 USD . If you have experience of any webcam for planetary work please help me out
By Cliffy Biro
Hello, I have been lurking in the background for the last few months, reading the great posts from many very knowledgable members, I’m now after some personal equipment advice and thought it was time I asked the pros!
I’ve been interested in the stargazing for a long time and have been enjoying casual scanning with tripod mounted binoculars for the past year. Up until now, due to work commitments, I’ve been unable to dedicate much time to my interest. However, I recently changed jobs and now have a lot more free time and the opportunity to really get started.
I’m in Yorkshire, fairly rural and not too much light pollution. I’ll be setup primarily from the garden but I’m only five minutes drive from remote moorland for any local out-of-home viewing. My aim initially is visual viewing and studying with a good quality scope. I worked as a photographer a long time ago so further down the line I’d like to try AP and add a second scope specifically for imaging. I’m thinking long term overall but would like to jump in with a solid core setup I can add to over time. My budget can be up to £2,500.
After much research I’m considering the Sky Watcher AZ-EQ5 or AZ-EQ6 mount - both these seem highly regarded and adaptable to future needs, I believe the EQ6 may be better considering future imaging use? For the OTA I’ve been looking at the Celestron 9.25? It seems to deliver well for planets and lunar but I would welcome personal recommendations of other ideal scopes within budget. I’ve also briefly looked into accessories such as the Baader Hyperion Zoom Eyepiece and William Optics / Baader diagonals but one area I need to know more about is eyepieces.
Thanks for your time, I’d really welcome advice from you all on what I should consider for my aims and budget.