Short intro. My name is Menno, I am from the Netherlands. I am not really mobile so I am stuck under a Bortle 8 sky. But that is not stopping me.
Busy with astronomy since 1980 but not much with my own telescopes. Have experience with a simple 150/900mm Newton and simple, normal camera.
But this year I bought a complete new setup. First with the objective to capture moon, planets and sun (like I am used too) but discovered that my Meade LX65 8" f/10 ACF OTA does rather good DSO. So I upgraded right away
And I am (very) experimental. When I am told "That is impossible", I'll first try it and then agree or disagree.
Like this capture of M57 with a focal length of 5080mm. I was busy with finetuning the collimation, so used a TeleVue PowerMate 2.5x Barlow on Vega. That made my scope f/25 or 5080mm FL. But too much seeing for that, so for fun I slewed to the nearby M57.
And here almost all the credit goed to my mount: an Ioptron CEM25EC. Just for fun I did set a capture time of 30 seconds and the tracking was/is SO good. No guiding, just tracking. I do use a manual input for the Sidereal Rate though. But all this unprepared since I planned only for collimation.
So made a few darks and did 35 x 30 seconds. And after stacking and processing, I got this. I was just blown away: all this unguided in this, tiny, tiny FOV and, even unprepared, almost steady stars.
This capture is far from perfect but it promises so much more when prepared and collimated. And new camera: this was captured with a Zwo ASI385MC (planetary camera ) But I have a Zwo ASI294MC Pro now also. Still have to use it though: clouds, rain and clouds.
Plus ofcourse: more experience. Only been busy with this setup and DSO for 3 months now.
Despite it not being perfect, I thought to share it here anyway. Also a bit with the message to other beginners to try things. Even when you think it's impossible: try, see and learn
Ioptron CEM25EC mount (no guiding)
Meade LX65 8” f/10 ACF OTA
TeleVue Powermate 2.5x barlow
Baader Neodymium filter
Zwo ASI385MC camera
Capture with SharpCap: 35 x 30 seconds, gain 190 (of 600), 10 darks.
AutoStakkert for stacking (not enough data for DeepSkyStacker)
Processed in PS: Curves and Levels, Shadows/Highlights, colors, contrast, noise reduction.
Edited by meegja, 04 July 2020 - 03:53 PM.