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I am imaging with a ZWO 178mc-cooled and am having trouble removing amp glow. I am using darks in the same conditions as lights and stacking and imaging with SharpCap. I am left with a image looking like below. No matter what I do I seem to be always left with this residual amp glow signature, Any ideas out there?
Since a few days, I'm the proud owner of the asi1600 Pro.
Performed some first tests, see: https://youtu.be/hHJBbpNoi2I
I used SGP Pro to test cooling and dark frames (2m and 5m) on unity gain settings.
Is it ok to use unity gain (139) setting or should I use high dynamic range?
Also, this is my first mono. Do I need to take flats/bias frames for each filter separately?
And how could I stack either broadband or narrowband images? I'm used to deep sky stacker.
This is a compact camera shot of the view through my Omegon Polar Finder for the EQ-300 of the same manufacturer. (taken with Canon Powershot SX110 IS)
It shows the reticle, which is not especially practical, since there's no mark facing years and no angular distance scale.
So I used direct shots at the background scene with known focal and FoV to calibrate the finder resolution, then used it to mark the 2018 distance for Polaris-NCP.
I have a Skywatcher 200PDS. I managed to get images of saturn, jupiter with the telescope and the ASI120MC-S camera. However, to get a bit more magnified image of these planets I got myself a Barlow Tele Vue 3x and Revelation 5x. I am having trouble with this setup and really disappointed now. I am not able to achieve focus with any of these barlows using my planetary camera. I have added extension etc. but no luck whatsover. I just see a blank black video preview in SharpCap. I have seen people using the same setup and getting good images out of those. Any help highly appreciated.
Thanks and Regards,
By Pete Presland
Saturn along with all the outer planets has been a chore to image all year, due to the low altitude. I had a bit of a eureka moment the other evening though.
At the bottom of the garden is a gap between the nearby conifers and even nearer cherry tree. Its only around 20 degrees width of sky, good for an hour or so of imaging time, but more importantly its right where the Planets transit the Meridian.
So last night I waited up for Saturn to appear in the gap (12:30) and there it was at a lofty 15 degrees, compared to 8 degrees in the other garden window.
1st capture was with my C9.25 and asi290mm using a 642 Proplanet filter.
The next two captures were same scope, but using my OSC asi224mc camera. The 2nd is with a ADC for the 1st time as well.
The ADC image is clearly improved from the 1st. I simply popped the ADC in the Barlow, with the nylon thumb screw level to the horizon and adjusted the 2 knobs until the image on the screen looked better. The red/blue edges top and bottom disappeared very quickly to be honest.
Not great images by any means, but certainly better than any of mine recently.
And definitely a spot to maybe catch the Mars opposition.