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Found 6 results

  1. I used my ZWO ADC a couple of nights ago for the first time, well the first time 'properly'. However, the end result is an image with lines across it. Anyone any idea what is causing this? I wasn't able to properly align the colours so captured a video anyway so maybe that is a possibility? Thanks Colin
  2. 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. ADC fitted Not great images by any means, but certainly better than any of mine recently. And definitely a spot to maybe catch the Mars opposition.
  3. See pdf attached ZWO v Omegon ADC.pdf
  4. Mars has not been a good subject since I took up astronomy three years ago but everyone is getting pretty excited for 2018. From Northern Europe it will be low in the sky and various experts, Damian Peach, Martin Lewis et al are recommending an ADC to improve observing and imaging. The ZWO ADC comes recommended and is more affordable than previous ADCs. At the age of 78 this may be my last chance to get up close and personal with Mars. With a 3" APO refractor, 5" Newt and 8" Dob currently in the armoury am I likely to get any perceived benefit from an ADC using any of these 'scopes, please? Observing latitude will be 43 degrees north. Any advice, positive or negative will be very helpful.
  5. Last night/this morning the seeing was quite reasonable. Only took a couple of videos of Saturn having done 4 on Mars - well with so many clear nights getting a bit tired. Still to process the Mars images, but the Saturn ones came out quite good. The ADC seems to do a really good job at such a low altitude - have to have it at max separation. This was with 2243 frames captured in Firecapture beta, 67% aligned and stacked in AutoStakkert!2, wa velets in Registax 6 and a very little bit of editing in Adobe Elements 11.
  6. A really useful article on Atmospheric Dispersion and the use of Atmospheric Dispersion Correctors by Damian Peach has been published on the BAA website under tutorials: https://britastro.org/node/9058 I'd asked about the use of ADCs on the BAA Forum (https://britastro.org/node/9268) and I wonder if many SGL planetary imagers are using them or have tips on their use? James
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