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eshy76

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Everything posted by eshy76

  1. Thank you very much Daemon!
  2. Oh and the best bit of the night was waking up at 5am to shoot my flats/pack up my gear and be greeted by...Orion The Hunter himself. Why hello there... ...he brought his friends the Hyades and Pleaides too... ...am I the only one who's heart soars when seeing Orion? I was transfixed for about 10 mins, but then it started getting cold...
  3. Had a good night last night - shot relentless Ha and OIII subs of the Eastern Veil for 6 hours or so...can't wait to process...the unpredictable weather gets me doing silly things like shooting M31 and M33 with the moon in the sky and then shooting narrowband subs around the new moon...
  4. Thanks Steve! I think the integration time was key, although one of the four nights was pretty much a write off with the FWHMs all over the shop for RGB data...APP weighted those subs very lowly...I had to reshoot that data, but I am happy with the outcome. Overall - I ended up with a LRGBHa split of about 12%/25%/25%/25%/13%, but taking into account the messed up night (which I still fed APP), probably roughly equal useable integration across all filters. Edit: Oh and LHE in PI editing seemed to bring out more of the dust lanes around the core. I also tried HDRMT, but that seemed to reduce the core to its singularity form...so I binned that!
  5. Thank you for this - yes I struggled with the colours and also gradients in the background and it is definitely warmer than other M31s I've seen...pushing the blues didn't really get me anywhere, so I settled on this for now. I think ultimately this is in Bortle 7-8 in summer and not in the new moon, so I don't know how much is salvageable, especially with my current processing ability! But thanks for the feedback, much appreciated!
  6. Thank you! I could have made this easier on myself by (a) waiting for autumn and (b) capturing this around the new moon (I think it was average moon phase of 50%), but I like the result!
  7. Hi everyone! It's been a while, mainly due to the cloudy nights over summer... My second ever M31 attempt, this time with a cooled CMOS mono camera and filters versus my previous DSLR effort about a year ago. It's an early M31, I was too impatient to wait for the autumn evenings when this incredible, awe-inspiring object will be highest in the sky and went for it in late summer here in the Northern Hemisphere. I love this hobby so much and the main limiting factor is my processing skills, but the only way to improve is to keep trying... hopefully I'm on the right track! Captured using APT, pre-processed using APP and post-processed in Pixinsight. Thanks for looking! 10.1 hours of integration time over 4 nights in August from my temporary back garden (we've moved house due to renovation work). Full details here
  8. Hi everyone, The North America and Pelican nebulae are situated in the Cygnus constellation and are thought to be 1800 light years away. My favourite part of the image is "The Wall", which is the "Mexico" part of the North America nebula and is a source of intense star formation. The data for this image was collected all on one night and therefore could do with more integration, but I like the result. I've used my go-to "natural blend" narrowband (as originally suggested by Jon Rista on Cloudy Nights): R = 76%*Ha + 24%*SII G = OIII B = 85%*OIII + 15%*Ha I personally prefer this "natural blend" to the Hubble palette both in terms of look and ease of processing! 4 hours integration time, captured with WO Z73/ZWO ASI1600MM Pro/Astrodon Filters. Full details here. Thanks for looking!
  9. Hi everyone, IC 1396 in narrowband shot over 3 nights at the end of June and processed using the SHO palette. Despite the relatively moonless nights, I opted for narrowband capture due to the lack of astronomical darkness in the U.K. in the summer. The Elephant's Trunk Nebula, or IC 1396A, is a concentration of interstellar gas and dust within the much larger ionized gas region IC 1396 located in the constellation Cepheus about 2,400 light years away from Earth. It, and the whole of IC 1396, is illuminated and ionized by the very bright, massive star, HD 206267, just to the east of IC 1396A. Captured with the ZWO ASI1600 + Astrodon filters, pre-processed in Astro Pixel Processor and post-processed in Pixinsight. 9.1 hours total integration time. Full details here. Thanks for looking!
  10. Just like in PI, APP (Astro Pixel Processor), allows you to weight subs by quality, including FWHM, when stacking. There is even a control to choose the percentage of subs to stack, so if you think that 10% of your subs are potentially bad, you would select 90% and would get the best 90% subs weighted by quality. This is a faster process than PI I find, as it's two settings then click, but you can always inspect the sub stats after weighting and manually remove ones you don't want in the same way if you wish. In your position that's the approach I would take and see if I was happy with the result.
  11. All very sensible tips here. I would just add that I don't really use those exposure tables for exposure time per se - I used the underlying maths to work out what ADU I should, theoretically, be aiming for per sub. So at unity gain and default offset, the maths chucks out a minimum ADU per sub for me of about 1400. You can then use the readout in your capture software to judge the right exposure times. It's a one-time thing unless you image in different places with different skies. So I aim for this when judging exposure time, which is dependent on light pollution. With my bortle 7-8 skies this works out for me at about 30-60 seconds for RGB subs (much less for Lum) and 300 seconds for narrowband subs. Results seem good, which is, of course, the acid test!
  12. Another vote for unity gain (139) to start off with. I've had the Pro version for nearly a year and it is only now that I am experimenting with other gain settings. As you say, the move from DSLR has many different aspects to it without complicating it by fiddling with the default gain which will give you great all round results as mentioned above. That sub exposure table/thread is a good place to start to judge sub length. Good luck! It's a great cam!
  13. Hi everyone - it's been a while! This has been on my hard drive for almost 2 months and I finally got round to processing it...it was quite optimistic of me to try and image this from my Bortle 7-8 back garden, but I gave it a go! While the nebula itself is clear to see, all those gorgeous dust clouds surrounding it were extremely hard for me to capture from my location without a lot more integration time. I think I'll head to dark skies to capture this one next time, along with some more focal length! LRGB shot with ASI1600MM Pro and WO Z73. 2.9 hours of integration time. Full details here. Thanks for looking!
  14. While I was waiting for my Astrodons to arrive last year, I got impatient and bought this ZWO LRGB 36mm set to experiment with my new mono setup. I used them for one night experimentally and have not touched them since - probably best if they see a new home! I believe these are the "newer" version of the ZWO filters, as they were purchased last year as mentioned - you can see from the photos that they are in almost new condition. Original packaging included. They are unmounted. Asking price is £150 including UK postage. Paypal is the preferred payment method. Thanks for looking!
  15. Having moved to an OAG, I've decided to part ways with my Orion 50mm guide scope with helical focuser. It is used, but in very good condition, with some minor wear apparent on the included adapter plate, not the scope itself. Includes original box, scope, scope bracket, vixen style shoe/holder and adapter plate + 2 screws as can be seen in the photos. Asking price is £55 including UK postage. Paypal is the preferred method of payment. Thanks for looking!
  16. I've mulled over this one a lot, but have decided to sell my ZWO ASI294MC Pro camera, which I bought new about 6 months ago, to focus on my mono imaging. The cooled camera itself has been used on maybe 8-10 nights in total with some really good results, as can be seen in the example pictures I attach. All spacers, adapters, cables and instructions are included, as can be seen in the pictures, as well as the original box. It is in pristine condition. Asking price is £820 including UK tracked delivery. Paypal is the preferred payment method. Thank you for looking!
  17. Now that I've upgraded, I am selling a key piece of equipment that propelled me into astrophotography - the iOptron Skytracker V2. This lightweight device (about 1.5kg) is great for grab-and-go astrophotography. A ball head mount (not included) is required to attach a DSLR to the tracker, which, in turn, can be attached to a standard camera tripod. It is used, but in excellent shape and includes the tracker itself, carry case, polar scope (illuminated by the tracker) and instructions. It is powered by either 8xAA batteries (not included) or via a standard 12V DC connection. I've included a photo of Orion which is an example of what I was able to achieve using this nifty tracker! Asking price is £160 including UK postage. Paypal is the preferred payment method. Thanks for looking!
  18. Hi there - Yoddha has been super helpful in addressing any problems I have had with APT...he helped me with the Platesolve2 approach I've settled on...I haven't really felt the need to go to blind solving yet.
  19. Hi there - I also have not been able to get blindsolve to work in APT...so I just stopped trying. I just use Platesolve2 instead. My workflow is: 1. Turn everything on - usually my mount is in zero position here 2. Slew away from Polaris (apparently platesolving can go haywire at the pole) - I usually use the simple GoTo function in APT to pick an object for this or Cartes du Ciel - do not worry if the slew is inaccurate, you are just trying to get away from Polaris 3. Hit "Shoot" to take an image - 10 second exposure or so should be fine 4. I then click on Pointcraft and then on "Scope position" which populates the coordinates the scope thinks it's at. Then I hit "Solve" Within about 20 seconds this is successful on the first attempt and I then hit "Sync" to make sure APT is dialled in - all the Goto++ functionality works perfectly after that and subsequent "Solves" are usually successful within 10 seconds. The only step which might be superfluous is the "Scope pos" bit, you might be able to hit "Solve" directly after the initial slew. I'd love to get blindsolving working, but the above method has been foolproof for me, and given the blind solve takes longer as it's solving more of the sky I believe, I'm not sure it would necessarily be faster. Hope this helps!
  20. Congratulations to the winners for some stunning images. This was a fun challenge!
  21. Hi Mark - I got 2.4 hours of integration time over three nights, 89x75s at ISO400 at 135mm and 6x300s at ISO800 at 430mm. APP put it all together easily - I think the lack of noise is due to 1. Antares being overhead in Mauritius away from light pollution 2. Using dithering 3. Using quality weighted subs when stacking in APP 4. Processing technique - I used TGV Denoise and MMT in PI, with bright masks. Hope that helps. Here is a link to the higher res version: https://www.astrobin.com/356347/C/?nc=user
  22. Mark's great pic has inspired me to post mine. Shame I only had a stock DSLR but lucky I had the Lacerta MGen to rescue my haphazard Southern Hemisphere polar alignment!
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