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Found 4 results

  1. Hello all, I am trying to process data captured on friday during almost full moon, and I'm having a hell of a time of it.. Due to the full moon doing it's best sun impression my target was an open cluster (NGC 225 in Cassiopea), thinking it would be doable. I was using my 2" Explore Scientific CLS filter, my unmodded Nikon D7100 and captured 92 usable 45 second subs at ISO 400. Calibrated with bias and flat frames and stacked with linear fit clipping as the pixel rejection algorith. The mission for the night was not getting particularly good data, but getting decent tracking and round stars, something I have had lots of trouble with! Now that I am trying to process it, I find im dealing with some very nasty gradients / casts and I can't seem to get any good colors. An initial strech reveals a strong blue color cast/gradient that I can deal with in a number of ways. Linear fit DBE ABE followed by the usual: SCNR (green) Color Calibration No matter what I do I end up with the whole image being either really green or really red and not much else for color in any of the stars. I also think i burned out all the major stars by over saturation.. I know the CLS filter is going to wreak havoc on colors because it completely blocks parts of the spectrum, so maybe the CLS filter is just the wrong tool for the job? If anyone would like to show me what they can get from this data, and how (so preferably with PI) I would be really grateful. At the moment im thinking maybe the data is just really bad and not useable? Linked is the final integrated xisf (only xopped slightly): https://www.dropbox.com/s/nmxds87toc7vz51/integration.xisf?dl=0
  2. Only used a handful of times as I switched from using the DSLR to a ZWO camera, so is in perfect condition. Fit's all Sony Alpha 7 cameras (A7, A7R, A7S etc) and is suitable for cameras which have been astro modified. Retail price is £200 but will accept £120 Will post First Class Signed For (UK Only) and payment can be made via PayPal or Bank Transfer Thanks for looking!
  3. Both little used, 'as new' condition, selling due to change of camera. Price incl. shipment: Ha: £99; CLS: £49 These are compatible with Canon 5D / 6D, etc, here are the links for details on these filters: https://www.365astronomy.com/optolong-h-alpha-7nm-narrowband-deepsky-filter-for-for-full-frame-canon-eos-cameras.html https://www.365astronomy.com/optolong-cls-city-light-suppression-filter-for-full-frame-canon-eos-cameras.html Regards, t
  4. Astronomik 2" CLS Filter for sale This two inch CLS visual filter is in excellent condition and comes supplied with its original Astronomik case (see pics). See https://www.firstlightoptics.com/astronomik-filters/astronomik-cls-filter.html NOW SOLD
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