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barkingsteve

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Everything posted by barkingsteve

  1. Cuiv recently did a video using the 2 dual band filters, perhaps you may find some of the info useful
  2. Imaged with a 585mc, L-Extreme filter on the WO 80mm. 60 x 90 seconds stacked with 10 darks and 10 flats.
  3. You can always bin 2x2 with the 183 which would technically give you 4.8 um and a resolution of 1.05"/pixel.
  4. Brought the ZWO version a week ago to replace my old Altair 385c. Seems like a decent upgrade on the old 385, only had limited time to use on the moon so far but should make a good EAA chip. Here is a quick roi image i took the other night with the 585 with a uv/ir cut filter on my C925 of Aristarchus and Schroters valley.
  5. Decided to pull the C925 out of mothballs and use the 585mc with the Baader Neodymium and 0.63x reducer to create a moon mosaic, 4 panels stitched with ICE and processed in Gimp. Used Astrosurface to stack as AS3! was having issues with memory, Best 35% of 3k frames sharpened in Registax.
  6. Looks like you had a very busy night/morning When taking a master flat, open the histogram when setting an exposure time and try and keep the peeks between 30%-70% and ( iirc ) the master dark needs to have the same settings as the lights ( exposure time, temp if cooled camera, etc. ) but you seem to be doing ok Been a while since i done some quality EAA, think i need a few sessions
  7. Quick one testing out the 585mc. Taken with the GT81 and Baader Neodymium filter. Best 40% of 3.2k frames and 1.5 drizzle in AS3, colour balanced and sharpened with Registax and final processing in Gimp.
  8. If the heq5 is too expensive for you, then i really do not have a mount suggestion. The mount is the most important part of the system as i am sure everyone will tell you here. It may be worth waiting for the smaller brother to the AM5 from ZWO ( announced a few days ago ) but this will probably cost 1k+ It will be a harmonic drive and guessing a payload of around 10kg's and probably weigh around 3kg's. Of course this is speculation but this may be a perfect portable platform for EAA and ap. In the mean time you can stick with your current plans until the 'itch' for longer exposures becomes too great ( what camera do you have or considering ? ) Edit: AM3 ( new ZWO mount ) Weighs 4kg's and a payload of 8kg's without counterweights.
  9. If you have any inkling that you may do longer exposures ( 30 secs + ) down the road, you will be better off getting an eq mount now. I started out with an alt/az when i first decided to do EAA and wished i never bothered as it only took a few sessions before i wanted longer exposures. Don't be deterred about polar aligning, with modern equipment it is easier than you probably think That is what scared me off originally but with ipolar and now asiair it literally takes a few minutes ( as long as your mount is fairly level and pointing roughly north ) and with the new harmonic mounts you don't even have to worry about counterweights and balancing.
  10. Quick one after a collimating session. C925 with 294mc pro using ir/uv cut filter. 4 panel mosaic, best 20% of 2k frames stacked in AS3, wavelets and colour balance in registax 6, stitched with ICE and processed in Gimp.
  11. Always seem to struggle with planets but had a go the other night. C925 and 294mc pro with a 2.5x barlow. Stacked in AS3 best 40% of 3.5k and 1.5 drizzle, Wavelets in registax and final processing in Gimp.
  12. C925 with the 533mm pro and 642 ir pass filter, some taken with a 2.5x barlow, best 30% of 1.5k frames stacked in AS3, wavelets in registax and processed in Gimp.
  13. Hi Lee, Unfortunately this is my first narrowband set, so cannot help with any comparison. I have only managed 1 night out since then, hoping to get out next week if weather permits, week off work Please see link below, I managed to get some data on the crescent that night. Steve.
  14. C925 and 178m with 642 ir pass filter. Still daylight so had to judge focus and with the low moon threatening to hide behind the houses opposite, managed to get a few in. Best 25% of 3k using AS3, wavelets in Registax and final processing in Gimp. Sinus Iridum Copernicus Tycho and Clavius Plato
  15. I did break out a 2.5x barlow and took a few but conditions were average and with the moon below 25 degrees i wasn't expecting much. Here they are, a bit over-sharpened to offset the conditions.
  16. Thank you, seeing was average and was undecided whether to set up or not, but I really wanted to try the 533 on the Moon
  17. Moon was low but clear spells between the cloud. Wanted to try the new camera on the moon. C 925 with 533MM Pro and 642 ir pass filter. 4 panel mosaic is best 20% of 1.5k ( stitched in ICE ) and smaller images are best 25% of 2.5k. All stacked in AS3, sharpened in Registax and processed in Gimp.
  18. Just be aware, buying from Germany and shipping to the U.K. may incur duties from customs and excise, making it more expensive than buying similar items in the U.K.
  19. Hi and welcome, The op is not using flats, which causes the 'bright circle' ( vignetting ) some stacking software like sharpcap allow you to add a master flat and dark before hand which will result in a more evenly illuminated image and eliminate the dust spots and hot pixels for the most part. I am sure the op and others will weigh in but I hope this explains a little
  20. 20 x 240 seconds of Ha and OIII with the 61 EDPH II, 533MM Pro and the Antlia 4.5nm filters. aligned and processed in Gimp and Siril,. Just a master dark applied in sharpcap, no flats or bias frames. Still allot to learn but happy with this first effort
  21. And the last one, this is 12 x 180 seconds of Ha of the Cygnus wall, foiled by cloud again. de-starred in Starnet++ and some processing in Gimp. Once the clouds decide to sod off I might actually acquire some useful OIII and SII data And the original stack
  22. I did manage to capture a few frames of SII and OII the other morning while testing, It was getting light when captured, but thought I would post here for anyone who is interested. These are single 5 minute frames with the Antlia 4.5nm and a single auto stretch in Siril, noting else. Stars may look a little off towards the edges as I need to correct spacing on the reducer Ha SII OIII
  23. Nice I would suggest perhaps using a ( free ) program like Siril. Your pic has a green cast and this can easily be removed using 'remove green noise' in Siril. As i am sure you know this is due to the Bayer patern ( 2 green to 1 blue/red ) Hope you don't mind but i ran the 'remove green noise' and nothing else in Siril.
  24. Manged to get set up and capture a few frames with the new camera and filter. A starless image of the Pelican using the 61 EDPH II and reducer, 4.5nm Antlia Ha and the 533 mono. 7 x 300 seconds ( 100 gain, -15c ) using a master dark in sharpcap and no flats. And the original stack with just a histogram stretch in Siril
  25. Delivery from FLO yesterday and 365 Astronomy today. 533MM, ZWO filter wheel and Antlia 4.5nm SHO. All installed and ready to take my first tentative steps into narrowband imaging
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