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About prusling

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    Star Forming

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  1. I suffer from two distinct dark horizontal bands on my Canon and get rid of them after stacking by using the excellent free app Fitswork4 - using the function Processing, Background Flatten, Lines to Equal Values with standard parameters.
  2. You can obtain screw removers. These use a pilot hole and a reverse thread bit.
  3. Now sold - please mark as completed. Thanks mods.
  4. Celestron Advanced VX mount in very good condition. Bought as pre-owned 18 months ago but hardly used since. Kept in a heavy duty Peli-like case which is included, along with an unused 5m high-quality screw-in power cable. Comes with the standard heavyweight 2" tripod to which I've attached a bubble level. If bought new, total price would be c. £875. Selling for £450 plus any shipping and/or payment charges (e.g. PayPal). Inspection/collection is preferred but would meet/deliver within 50 miles of Poole. Also SkyPortal wifi adaptor, unused apart from testing - new £125, selling for £75 ono. Both for £500. Thanks for looking
  5. Happy New Year! Looking good, Louise - was that with a 200mm lens? Did you manage to get to BR? I was outside on Thursday during the clear periods imaging the Pacman Nebula but missed last night - there seemed to be some high cloud in Poole? Hope you have enough material to process and look forward to you sharing the results. Hope to see you and others on Tuesday.
  6. Cheers, Ade. Best wishes for Xmas and New Year to you and all the members - here's hoping for many clear skies and observing sessions in 2019 and an opportunity to meet new locals!
  7. Thanks, Kev, your 100 degree 20mm Myriad on the 250px was a revelation - closest I have come to naturally looking through a window to the universe!
  8. Thanks to @AdeKing, @kev100 and @Grumpy Martian for your great company last evening. Despite the early cloud, chilly wind and bright Moon it was nevertheless very enjoyable! Imaging was very hit and miss but I managed to pick the best 34 of the 60 1-minute frames I took of the NE Milky Way region without any calibration frames and put this heavily cropped image together with DSS and StarTools. Capella to the lower left and the Pleiades to the lower right with the California Nebula between them, double cluster middle left with the Heart and Soul Nebulae to their left, and of course the Andromeda Galaxy to the upper right. Looking forward to the next get together!
  9. Hi, I plan to be there and will be bringing my DSLR/SkyTracker. Look forward to meeting you all!
  10. https://www.portsmouth.co.uk/news/politics/street-lights-to-be-turned-off-at-night-across-hampshire-1-8688439 We need to lobby for this in Dorset as well! I've copied it to the Street Lighting team at Poole council.
  11. A brief update - post-adjustment the tracking is still not great but probably better than before. Gotos are OK and the mount is less prone to accidental manual movements although as noted there is a fair bit of play before real movement. Will persist with it for now, but underwhelmed...
  12. It is very dark. It's the stretch that is moving the very dark pixels up to brighter levels so you can see them. You have a mean/median pixel value of around 656 out of a possible 64k. That represents the unwanted signal from the electronics that needs to be subtracted from the pixel values to give you the real signal.
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