Jump to content

SkySurveyBanner.jpg.21855908fce40597655603b6c9af720d.jpg

AbsolutelyN

Members
  • Posts

    907
  • Joined

  • Last visited

  • Days Won

    7

Posts posted by AbsolutelyN

  1. Been a difficult week or two so no astrophotos to show for all the recent clear skies but managed a couple of very quick solar images today.

    Favourite is this quick animation of convection of surface granulation over about 20 mins. The spots are AR2848. 

    2021-07-22-0823_5_8_lapl6_ap11682_px_ani

    AR2845
    2021-07-22-0823_AR2845.thumb.jpg.5f53a7b2e8ac5f5f6af52c4c49b7c39b.jpg

    AR2846

    2021-07-22-0823_AR2846.thumb.jpg.da1a31842e60db65af0c1947d8a85098.jpg

     

    • Like 25
    • Thanks 1
  2. 37 minutes ago, CraigT82 said:

    Just noticed you went better than top pick and got IOTD with this one! Congratulations, it is s stupendously good image.

     

     

    Thanks Craig. Inspired by your recent Jupiter/Saturn images - had a go other night and failed miserably. Does the ADC make a big difference?  

    • Like 1
  3. 8 hours ago, CraigT82 said:

    Fantastic Tristan, so much fine detail. Just been perusing Astrobin and your image of this group is by far the most detailed on there, well worth a top pick!

    Do you use a continuum filter? 

    Thanks Craig, yes I did use a continuum filter. You should get a full aperture filter for your 300mm beast - that would have some serious resolution! 

    • Like 1
  4. I don't think it's an either or. Both are incredibly powerful image editing software packages.  You can do everything in either of them but personally being already very familiar with photoshop I use a mixture of both and I find they compliment each other very well.  PixInsight offers very specialised tools which makes many things a lot easier - gradient removal and star reduction for example. So if I was to pick one for astro I'd go with PixInsight, but both make for a very powerful combination.

  5. 6 hours ago, Adreneline said:

    Another striking image to add to your portfolio of solar images. I love all the detail you manage to reveal.

    No hope of replicating that here - the sky looks like one of my stretched flats! - and it's raining :( 

    Adrian

    Thanks Adrian, we only had a couple of hours clear sky this morning before clouds rolled in so was lucky to get anything at all as seeing was dubious.  

  6. I used the Starizona one with my RASA 8 and it was very good. There was no ZWO option when I bought it. If you go with ZWO make sure its exactly the same measurements as the RASA is extremely sensitive regarding distance to sensor, it needs to be exact. There is also an Artesky filter holder - but its not a draw system, just holds a single filter so probably better for OSC rather than mono. I've heard it is very good though and if I still had a RASA that's what I'd be using for my 2600MC. 

    https://www.teleskop-express.de/shop/product_info.php/language/en/info/p11535_Artesky-2--Filterhalter-und-T2-Adapter-fuer-Celestron-RASA8-Astrograph.html

  7. We've had more clear skies since April than in the entire of last winter so I'm certainly making the most any clear skies I can get. I was unsure how possible it would be without proper dark skies and very short nights but so far so good and soon nights start getting longer again. This is 5.5 hours over two not very dark nights last weekend - approx 23:30 to 2:30. 

    NGC-6888-Cresent-Nebula-Widefield-T.thumb.jpg.12dfee2611525043f98b91b715605247.jpg

    • Like 13
  8. 14 minutes ago, Stu said:

    Wow, incredible detail! I would love to see what you can achieve in good seeing conditions!! 😱😱😀.

    Pretty poor here, I could just make out some structure in the Spot visually but not much. One or two of those features above and right of it showed up as small dots too.

    Great shot though 👍👍

    Thanks, the atmosphere was so turbulent today that I didn't think I was going to get anything but finally late afternoon after half a dozen tries finally caught a brief steady point - only a few seconds but that all you need. 

  9. 1 hour ago, vlaiv said:

    Here is another sim :D

    This time 10" scope capturing granulation:

    image.png.1ec98f7bc51df045f664dc0bbe66507a.png

    Left is excellent capture by @AbsolutelyN using 10" scope and ASI178mm camera and right is simulation of granulation from above image. I'm not sure if I matched pixel scale properly since I'm missing pixel scale for both images - I just measured cells and assigned 2" to measurement. I also tried to match contrast brightness.

    It's actually an 8" scope - I had to stop the aperture down to the size constraint of an a4 sheet of baader solar film. Taken with a 3x barlow so 3600mm. Interesting comparison - needs good seeing though. 

  10. Cloud was very variable last night but I left the scope running in case it cleared. It managed 60 mins worth of data but lost framing due to clouds. Taken with 250PDS and 2600MC, 30 x 2 mins, Bortle 5.

    NGC7000-250-PDS-60mins-XS.thumb.jpg.f64275328c3a2c9f0f874d6990a397ac.jpg

    • Like 7
  11. This is the best I've managed so far, not sure if it was bad seeing or heat reflecting off the roof but could not get good focus until this afternoon and even then only barely. Taken with 250pds and 178mm at about 15:20

    AR2833.thumb.jpg.fa772f621af3bea3c49478bc63aee37a.jpg 

    • Like 11
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.