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Showing content with the highest reputation on 25/09/20 in all areas

  1. This short animation is made up of 5 images taken on 22nd Sep at approx. 15 minute intervals, spanning 1 hour. Equipment - Celestron C11 working at f/20, and ZWO ASI174MM. It would be interesting and fun to try and go for a longer duration if the clouds and seeing play nicely
    12 points
  2. Imaged over 7nights, 93.6Hrs integration Filters used: 3x Astrodon 3nm OIII 3x Astrodon 3nm H-Alpha Exposure Info: 336 x 5min = OIII 340 x 10min = OIII 54 x 10min = H-Alpha Telescope: https://flic.kr/p/2gAfKn7
    11 points
  3. This is supernova remnant CTB1/LBN 576 (Abell 85) in HOO+RGB. Known by some as the Popped Balloon or Garlic Nebula This has been a real challenge but I'm passed the stage of several targets a night and want to get the time in. I had never heard of this object until I was looking around Stellarium for more obscure targets. It's listed as a custom object. I spoke to a few imagers who had captured this and they told me how faint and difficult it was. It was hit or miss whether I'd pick up anything worthwhile with OSC but I wanted to give it a shot. These guys were hitting it with 30m
    11 points
  4. First picture after the summer. It was about time ASI 1600MM pro H-alpha (6nm) 116 x 300 sec OIII (6nm) 55 x 300 sec SII (6nm) 55 x 300 sec RGB 3 x 17 x 60 sec Esprit 100 Avalon Linear & autoguiding Software APT, EQ mod & PS CS6.
    9 points
  5. Two recent Mars images first from 14th sept, the 2nd a week later on the 21st. Pretty happy with the details visible, particularly like the Polar clouds in the 2nd image. Stacked in A/S3, processed with Registax 6. Used a different method this time with Reg6, only adjusting tabs 4,5,6 with linked wavelets, then denoise in tab 1. C9.25, Asi224mc, ADC, X1.8 Barlow
    8 points
  6. Ive been sitting on this data since last weekend, havent been feeling so great this week (baaad insomnia) which kinda took the wind out of my sails (unable to concentrate/think/operate normally). But today hasnt been so bad, so my clarity of thought has improved enough for me to process it properly with flats/bias. Thankfully, after a bit of tinkering and very patient focusing - Ive got this working at f4 with corners that are more acceptable (to me).... hurrah! 14x900 (Astrodon Ha) Askar ACL200, NEQ6, QSI683 Thanks for looking!
    8 points
  7. Below is my rendition of the open star cluster discovered by Caroline Herschel, NGC 7380. It is also included in the Sharpless catalogue and is designated sh2-142. Most of my imaging over recent months has been concentrated in the region covering the constellations Cepheus and Cassiopeia in the North and NGC 7380 is located in the former. Like a lot of nebulae, this has its own modern name, the Wizard Nebula, just in case sh2-142 doesn’t immediately roll off the tongue! Narrowband data was captured in Hydrogen Alpha, Oxygen 3 and Sulphur 2 using 3nm 1.25” Chroma filters and the ZWO A
    7 points
  8. Had a go at the owl cluster... think i have over processed it Skywatcher 130pds, EQ-5 with dual axis motors Nikon D3500 un modded 62x60 sec ISO 400 40 flats 40 bias Processed in photoshop with astronomy tools and astroflats pro Thanks
    7 points
  9. This is something I have been working on for a while and my first three colour narrow band image. I have normally kept my imaging to HOO for a few reasons, the first reason being that I don’t have much time to image and so three channels means I get less images completed. The second reason is that I am not a fan of the more tradition blue and gold image pallet. The final reason is that I have slowly being adding AD filters (to expensive to buy all at the same time for me) and I got the last, a 5nm SII, from Ian King at the end of May. I actually found this area by scanning around the sky
    6 points
  10. Go big or go home! Newly acquired visual setup, thanks Steve for the scope and Craig for the mount Bring on the next clear night!
    6 points
  11. As we all know the T2-T2 male adapter for filter wheels and spacers can be a bit of a pain to get off. I actually caused some minor damage to mine and my filter wheel housing when trying to remove it one time. I have since designed and manufactured my own tool with this special purpose and it can be found on Thingiverse for those who have a 3D printer of their own. It has a couple little nubs that fit into the holes on the adapter and enough material to give you something to grip on to when you twist. https://www.thingiverse.com/thing:4605454
    5 points
  12. I find the Wizard Nebula fascinating and have wanted to capture it for a long time. The shape is so well-defined, and the surrounding Ha nebulosity adds further to its eeriness. I was quite surprised by the amount of detail provided by the SII. As always, I welcome any advice from the experts on the forum! I tried to lay off the noise reduction to avoid losing detail, hopefully it worked. Some of the frames were taken under not so ideal skies, so I feel adding more integration time would help with noise reduction etc. For now, 26.5 hours is more than enough! Equipment: Atik 490EX A
    5 points
  13. Taken with a Mak 180.and asi224c. On the look out for a ADC,although most places seem to be out of stock at the moment. A autofocuser would be a godsend,but struggling to find 1 for the the Mak. Sooty.
    5 points
  14. I set up early yesterday to shoot that tiny sunspot that had developed. However, by the time the sun was high enough to shoot it was gone. So I shot this anyway. Thanks for the peek. Stay Safe & Clear Skies John
    5 points
  15. Finally got this mosaic stuff to work! Not happy with the background or TBH when you zoom in, the actual nebula. Will probably have another go at a reprocess but this has taken days so Im presenting what I have so far! Each of the 4 panes is 20XHa and 20XOiii
    5 points
  16. First attempt at the Pleiades after taking my first image ever in June. As always keen on receiving CC (I am not happy with the star field). This is 75 minutes (15 x 5 minutes) using a modified Canon 800d and SW ED80, no filter. Stacked and calibrated in APP and processed in PS CS6.
    4 points
  17. Last night I had a zoom meeting and about 10.30pm I went outside to witness one of the best transparent skies in a long while. Too late to set up the scopes so decide to have a session with the Helios Apollo 15x70 binos. Started by observing M51 and then over to M101 by which time I knew that the sky was very good for observing. Took in these objects - M13, M92, M11, M16, M17, M2, M15, M33, M32, NGC7789. All these objects were observed with the binos and no filters. I now added the TeleVue Nebustar II and the Lumicon UHC and took in these delights. The North American N
    4 points
  18. Pretty much agree. I either use no filter or the DGM NPB on that one, though the Baader UHC-S adds just a bit of contrast enhancement and makes the image a tad better than no filter at all. I don't disagree with LDW1--the Baader UHC-S is the only broadband in my filter box, and in dark skies it is my go-to filter for M20 because it doesn't kill the reflection nebula like the narrowbands do. Normally, in dark skies, M42/43 is so bright it damages my night vision. It's hard to see that a filter is needed, which is why turning up the contrast just a tad with the broadband works well.
    4 points
  19. Now would this be classed as EEVA? - NGC40 and 1x 30s exposure with a dslr through my lx90
    4 points
  20. Dual speed knob for the soon to arrive Bresser 127L frac and a Baader T2 to 1.25” adaptor with microfocus and some nylon thumbscrews.
    4 points
  21. I don't think you can scrimp with filters. I would look at the Astronomik and the Televue (made by Astronomik) OIII filters. I've also got a Baader OIII, with an even narrower bandpass that only covers one of the two OIII lines, and that shows the brighter (denser) parts of the veil well, but it doesn't show the looser, more subtle parts that blend into the background sky like the Astronomik does. The cheaper "OIII" filters tend to have too wide a bandpass and with them you are more likely to see nothing at all.
    4 points
  22. There are a number of ‘firsts’ for me here. Got my first ever image with the new V-power focuser on my 130PDS, it’s my first step into imaging with a dedicated mono camera (ZWO ASI 1600) and it’s also my first ever use of any calibration frames. It has been a steep learning curve and lots could have gone wrong, however, I am just happy to have produced this colour image ! The processing isn't great, I still have much to learn and I’ve found it quite difficult tbh. I have struggled with star bloating when stretching, wasted hours trying to produce star masks (but just produced ugly h
    4 points
  23. I haven't posted for a while but I have been out a few times. Here are four images, one taken of Neowise in July and the other three recently taken of random rocks ! The spot is Higger Tor which is on the Derbyshire / Yorkshire border near to Stanage Edge. As you can see, the Neowise night had quite a clear sky but the other three I couldn't even see the Milky Way through the orange sludge ! The aim point was " Just to the right of Jupiter and hope ". It's quite impressive what a modern digital camera can do to drag detail out of the murk. The last image was taken with an older secondhand Sony
    3 points
  24. Hi everybody. I saw these in Sky at Night Magazine. £10 in Argos and a lovely little set. A string of 10 battery powered lights (includes Pluto, yes it is a planet!) Great gifts or just a treat for yourself. Mine are going out in my observatory.
    3 points
  25. Hi all. I'd like to share attempt at IC 1396, the famous 'Elephant's Trunk Nebula' located in Cepheus. It was tough processing at first (my first go at processing was awful and was discarded but at least served as a benchmark for improvement), but I now have some images that I'm happy with. The stars were a bit difficult to handle, as from the off I had some halos around the brighter stars and even some of the less brighter ones, and attempting to remove them with Starnet++ just made things worse so I just tried to do the best with the stars as I could in processing. 60 x 5min subs (
    3 points
  26. Here is my last RASA 8 image for a while as clouds seems to have settled for more than a week. This dark nebulosity between Cepheus and Cygnus is Barnard 150 and next to it is the Fireworks galaxy NGC6946. I was pointing both my RASA and my Edge HD11 at the same area this last cloudless night and I just posted the Edge image of the galaxy. Barnard 150 apparently also goes under the name of the Seahorse Nebula due to its shape. I am a biologist and have often worked in marine environments but have never seen a seahorse like this The ASI2600MC was set at gain 100 (offset 30) and kept a
    3 points
  27. Keeping with the in crowd; the 2021 Stargazing book, and courtesy of Ebay, a very, very cheap "opened, never used" GSO 2.5x barlow.
    3 points
  28. Hi everyone, I just want to share with you a new image I have acquired of the Pelican Nebula (IC 5070) in Hubble Palette: Acquisition details: - Location: Shropshire, UK. - Total exposure time: 17.5 hours. - Imaging telescope: Takahashi FSQ-85EDX. - Imaging camera: Atik 383L Plus Mono. - Filters: Baader 36mm unmounted. - Mount: Sky-Watcher EQ6-R Pro. - Software: Sequence Generator Pro. Processing details: - Stacked in DeepSkyStacker. - Processed in PixInsight and Adobe Photoshop CC. Hope you enjoy this image. You can see more of my images at www.cwastroph
    3 points
  29. Processed in Photoshop: Processed as a HOO combination as could not get a pleasing result in SHO Levels and Curves Equalisation function Selective colour Balance colours HLVG (weak) Slight star size reduction.
    3 points
  30. I decided to create a synthetic RGB image, mapped as HSO with a Ha luminance layer. I used SiriL to stretch the image and calibrate the natural star colours, followed by Starnet++ to remove the stars and create a star mask. Finally the image was brought into Photoshop, for noise removal and sharpening. This did not require much, as the data is virtually noise free! After colour balancing and adding the luminosity layer, the stars were added back for the final image. A big thank you to FLO and IKI for letting us play with your data!
    3 points
  31. Processed in Startools 1.7.419 Workflow below ----------------------------------------------------------- StarTools 1.7.419alpha Fri Sep 25 15:56:55 2020 ----------------------------------------------------------- Loading red channel data File loaded in LRGB module [C:\Users\DAVID\Downloads\Sii.fit]. Loading green channel data File loaded in LRGB module [C:\Users\DAVID\Downloads\Ha.fit]. Loading blue channel data Loading blue channel data File loaded in LRGB module [C:\Users\DAVID\Downloads\Oiii.fit]. --- Compose Parameter [Luminance, Color] set
    3 points
  32. I havent posted for a while its so good to finally get going again..... Ive been wanting to image a wide field of M45 for years.... managed to get tenough over the past 4 weeks now it is rising early in the morning.......total 12hrs comprised of 300s, 180s and 60s exposures. Imaged with a 105mm 1.4 Sigman lens @ f2 with an ASI2600 OSC. Cmos Processed in Pixinsight, Photoshop,and lightroom Thanks for looking Peter
    3 points
  33. Mine has been put away until Dec 25th. It's going to be my annual to open on Christmas morning.
    3 points
  34. Cheers for the heads up on this book chaps! At a quick glance it looks very informative.
    3 points
  35. Looking last night at 23:00, I could see a definite haze in the N Hemisphere, plus two brighter patches showing on the bright side (may just be albedo features). I took a few images, eg attached which hint at the haze. Chris
    3 points
  36. I’m sure there will be plenty of reports like this, but here are some thoughts on observing tonight. I had two scopes setup tonight, having observed Jupiter and Saturn earlier in the evening. Looking at the Jetstream forecast and the general stillness in the cloud elsewhere on the satellite images, plus the high haze it seemed that tonight would be an excellent night for planetary observing. The two scopes were the Vixen FL102S on GP mount with a 3 to 6mm Nag Zoom, and the OO 8” f8 on my EQ Platform with Leica Zoom and AP Barcon. That gave me up to x300 in the Vixen and up to x360 in
    3 points
  37. A latest effort of Saturn with a Mak 127 and a Canon 600D (unmodded) on a EQ5 mount plus a 2x barlow. Taken on 20th September between 21:10 and 21:38. 14x 120s (approx) AVI videos at ISO800. Had to manually press start/stop on the camera. Converted all the AVI videos files into SER files via Siril. Stacked all the resulting frames in AutoStekkert, 15% of the best frames. Brightened x4 to auto map alignment points. Noise Robust set to 7 (Low SNR) as the videos were quite noisy. A little wavelet sharpening and denoise in Registax 6 for all 14 stacked images, auto stretched on openin
    3 points
  38. A couple of nights ago, mist, fog and dew rolled in shortly after.. but probably the sharpest stars I've photographed so far
    3 points
  39. The tile of this paper on ArXiv today caught my eye. It mainly focuses on the effect of climate change (in last 30 years and projecting into the future) on obs made at the VLT site in Chile. You can also read the full paper in Nature Astronomy. Essentially, the authors investigate the effect on seeing of local temp rises (also effect on telescope operation), the increase in the surface layer turbulence, and increase in southern subtropical jet stream activity (affecting the adaptive optics and hence on quality of exoplanet obs). All-in-all an interesting read. But to be honest I'm mo
    3 points
  40. Well I made good use the clear skies and new moon last week with some RGB & Ha imaging and found these two targets on Stellarium. First composite image by this method and pleased with the outcome after 3 different renditions throughout the day. Still figuring out the exposure length, gain, offset ADU with ASi1600 certainly different from shooting a DSLR. 50X120sec R,G & B subs and 50x300sec subs (additional 15x240 sec luminosity subs not used) processed in Photoshop. Imaged with Whitecat51, ASI1600mm pro and Heq5 pro mount guided with PHD2/APT. Andy
    3 points
  41. Couldn't resist having a bit of a tweak to my previous M27 effort. I felt H-alpha was being drowned out by O[III], and as these data were shot through an Optolong L-eNhance filter with an OSC camera, the only option was to tweak curves with Gimp. Previously, I had only boosted the red channel, but wasn't quite satisfied. I therefore reigned in blue and green, only at the higher levels, and feel the result is better balanced. It seems to have removed much of the cyan cast of the stars as well. I also cropped some of the artefacts left by FITSwork's unsharp masking routine. A bit of t
    3 points
  42. I was livid to see how SGP had handled the change in their business model - someone suggested trying NINA - I had heard of it but never used it. Prompted by my disappointment with SGP I downloaded NINA and spent an afternoon setting it up and generally playing about with it in the daylight. All seemed very impressive - well thought out and everything I needed it to do was relatively easily found. Last night was an unexpected relatively clear night so I gave NINA a whirl under real imaging conditions. I had to spend a small amount of time setting up the step size and number
    2 points
  43. Best 50% of 3000 frames, ASI290MC via C6 on HEQ5PRO. Stacked in AutoStakkert! and no further processing apart from conversion via GIMP and Paint.net. I am pleased with the result.
    2 points
  44. You also have to watch out for "rust"/soft coating failure in some of the older Lumicon OIIIs:
    2 points
  45. Just decided to reprocess this image a bit. I think the colours look more natural now, along with the image being less noisy: Thanks, Chris
    2 points
  46. I don't buy these, I invariably receive them for birthday or Christmas presents, there's a suspiciously shaped present in the lounge at the moment, so I hold fire. It is my wife's contribution and support of my hobby. I guess I count them to remind me how many years I've been married...
    2 points
  47. It makes such a change to be able to work with decent data ! I've also gone for a HOO as I didn't think the minimal SII added anything, although I do intend to do a version with SII as well. Basically this is an RGB made from the Ha, O3, O3 as the channels. A bit of tweaking in levels and curves. It's also had Ha added as luminance and O3 added as luminance and blended in. An unsharp mask + dodge/burn layer blended and finally another saturation uplift and blended as a colour layer. Only done a couple of HOO images in the past, quite a few years ago so this is nice to be able to hav
    2 points
  48. I just edited my post - I had clicked on the Vixen link. I have just added the Helios to my basket and am going to the checkout!
    2 points
  49. There's a first time for everything, usually it's the other way around. Astronomik make the filters in Germany, ship them to the USA where they are checked by Televue, then they are shipped back to the UK to be sold to us. You've got two lots of shipping and import taxes, plus labour costs for the additional QC check which I think can easily make up the difference between the "standard" Astronomik and the Televue OIII filters. Is there enough variation in the quality of the filters to make that additional QC check worth the cost? I guess it is up to each buyer to decide.
    2 points
  50. Lots of debate on focusers here. My experience is that the standard one works well with DSLRs but struggles a little with the weight of camera and filter wheel in a dedicated set up. However, with a bit of fiddling (making sure everything is adjusted well and locked once focus is confirmed) I think it does cope. The photos below all came out of an ASI1600 with filter wheel on the standard focuser.
    2 points
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