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Rob63

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Posts posted by Rob63

  1. A huge thank you to FLO & IKO for this, it's such a treat to work with such fantastic data.
    Perfect timing too as I have been thinking of pulling the trigger on the StellaMira 90mm triplet so this was a fantastic insight into just how good this scope is !

    I wanted this image to show the magnificent background nebulosity while still looking natural and not over-saturated.

    Pixinsight load Ha, OIII, SII and do a slight Crop and DBE to each

    Ha, OIII, SII => stacked as Master Lum

    Deconvolution with BlurXTerminator (pre V2 🙂 )
    Slight noise reduction on OIII & SII channels via MultiscaleMedianTransform  (MMT)
    Basic Histogram Transformation & Masked stretch

    Channels combined with PixelMath

    • Red: Sii*0.35+Ha*0.65
    • Green: Ha*0.35+Oiii*0.65
    • Blue: Oiii

    StarXTerminator to remove stars and process separately.
    Multiple rounds of Histogram Transformation
    SCNR
    LRGB combined with masterLum

    Stars
    RGB mapped as SII Ha OIII
    Photometric colour calibration for background neutralisation (narrowband mode)
    Several gentle applications of Histogram Transformation as I want to de-emphasise the stars a bit.
    Curves (saturation)

    Export to photoshop
    Adjust colour, saturation & contrast to taste.
    Add stars layer (linear dodge(add) )
    Add any final tweaks
     

    NGC6888-Rob_Parsons.thumb.jpg.3c06bdd29b875f611187170534e3c523.jpg

    • Like 3
  2. Only saw this was happening less than an hour beforehand so it was just a record shot but great fun to do.


    The capture glitched halfway through (old laptop) and missed 600ms i.e. half the transit, so this is just a ISS single frame (on top of 30 stacked frames for the surface).
    Gear used: 80mm scope, Lunt B1200 and ASI290 on manual mount, very undersampled but wanted to make sure I caught it.
    Exposure 0.55ms, gain 100 around 110fps

    ISS Transit from Edinburgh 2023-10-15 12:28 passing AR3464 and AR3465

    ISSTransit_Edinburgh-2023-10-15-1228-CaK.jpg.300d334af188e8d76b59024561c83207.jpg

     

    ISSTransit_Edinburgh-2023-10-15-1228-CaK-rgb.jpg.9ec64ba97f3864de23042c113b7e7e2a.jpg

    • Like 7
  3. I am really behind on processing my data but thought I'd share this nice solar filament from 8th September 2023 ~12:57 UT.
    Image inverted to show a better view of the structure involved and rotated 180º for viewing.

    Equipment used was 120ED, Quark, ASI174MM

    2023-09-08-1257-filament-inv.thumb.jpg.42175e19c1c103f40510ce00300dcba4.jpg

     

    AR13423 from the same session 12:45 UT

    AR13423-2023-09-08-1245_1-RP.thumb.jpg.d236254fbdb2b877673814749f09cee7.jpg

     

     

    • Like 12
  4. A good session on Monday allowed me to do some testing with various sizes of aperture masks in CaK and G-Band.
    Finished the session with some H-alpha and the standout for me was the southern polar region, not quite a crown but nice filament & filiprom.
    I don't usually like inverted images but it really does bring a 3D feel to things

    Image rotated 180º for viewing.

    ED120, Quark and ASI174MM

    2023-09-04-RP-southern_crown.thumb.jpg.056013ad8b22d643a546a77aad804f09.jpg

     

    2023-09-04--RP--southern_crown_inv-RGB.thumb.jpg.94efe7ebaa96e414c1c799e0d368867c.jpg

    • Like 6
  5. 1 hour ago, IDM said:

    Great image. I am awaiting delivery of a Quark and wondering/dithering over what camera to partner with it. Could you let us know your camera and image acquisition details.

    thanks

    Ian

    Hi Ian,

    The most popular sensor for solar is still the IMX174 mono and it works well for Quarks.

    I used the ZWO ASI174MM version for these images but there are several companies making cameras with this sensor.

    Gain with this was around 220 and exposure time 7.5ms at ~130fps.

    • Like 1
  6. Enjoying a quick visual session yesterday morning with the 80MM & Quark on my manual mount (Scopetech Mount Zero) before the rain was forecast to arrive.
    I decide to capture some reference shots and I was lucky enough to catch an M.6 Class flare as it happened 🙂

    Very exciting to watch and and happened very quickly, I could see the changes in real time on my laptop screen.

    Here are a few images in the sequence

    08:53

    AR13372_MClass_Flare_2023-07-12-0853.jpg.d82768bb9d2faec08fbb8ae57e246057.jpg

     

    08:55

    AR13372_MClass_Flare_2023-07-12-0855.jpg.6f626797478ba0736babbd812dfca1fc.jpg

     

    08:57

    AR13372_MClass_Flare_2023-07-12-0857.jpg.686957538dc7f689c87209c358319f67.jpg

     

    GOES info for this flare

    GOES-X-Ray.jpg.76423c3b63c1bf0915e2ee62a5b97f81.jpg

    • Like 15
  7. Loving this Prominence!
    Captured 60 x 2000 frames from 8:30 - 9:15 UT this morning (14th June)
    29.8Mb in size hosted on Flickr looped forward-Backwards.
    A couple of stutters as I was running out of disc space but it shows some fantastic motion.
    ED120mm Quark, ASI174MM on a Skywatcher EQ6-RPro.

     

    2023-06-14-0844_1-RP-Quark-Exposure7.5ms_Gain240_ZWOASI174MM_lapl3_ap2516_out_aligned_pipp.gif.9a352e42ed90723f3c1e62441a07bd6d.gif

     

    Bonus content 🙂 The same Prom in Calcium K

    2023-06-14-1345_7-RP-CaK-Prom-SE.thumb.jpg.6d97343daf32a80c0e27dea70f39f59a.jpg

     

    • Like 7
  8. Beautiful little liftoff prominence in the SE just now 13th June 2023 ~4:17pm (UT).
    I was enjoying a nice visual session when I spotted it, I don't think I would have by camera alone I really had to up the gain to get it on screen.

    ED80, Quark, ASI174MM on a Scopetech Mount Zero, captured via manual mount drift technique

    Quick process below in mono & 'RGB'

    Mono

    2023-06-13-1617_6-U-LiftofProm.thumb.png.207cc0fd874151c69cb7ca412fc67d9c.png

    RGB 

    2023-06-13-1617_6-U-LiftofProm_RGB.thumb.png.44cf7bd969554f52e8c23e2326e245d2.png

     

    • Like 11
  9. Some decent weather here in Edinburgh last week and I had a few early morning session before work.
    All taken with the 120mm scope on EQ6-R Pro mount, I haven't 'corrected' rotation, just left the in best orientation for viewing

    Ha images all with Quark, ASI174MM and Baader 35nm Ha filter as an ERF

    AR3302

    AR3302_2023-05-16-0745-Mono.thumb.jpg.f52bf28b6a7c324369c0f7d7db9a1f51.jpg

     

    AR3302 Mosaic

    AR3302_Panorama-mono.thumb.jpg.bd7e9904d005cefdcf383200c86b91ef.jpg

     

    Solar Smile

    2023-05-15-0843_6-RP.thumb.jpg.0217ff6a606fcfc7e5844c25fbea6efa.jpg

     

    CaK 65mm @ f14 using ASI290MM

    AR3302_2023-05-16-0827_8-RP-CaK.thumb.jpg.0f60117b43def7310eda1859c252b34d.jpg

    • Like 7
  10. Managed a short Ha viewing session this morning before 9am and there was a lot of action going on.
    Decided to get a few captures by just letting the image drift across the frame as I was using the Scopetech Mount Zero (manual).
    ED80 with a Quark Chromo and ASI174MM.

    2023-04-14-0854_3-Ha-Gain235_Exposure8.0ms_ZWOASI174MM.thumb.jpg.5d2b80c8de00584a8f4f328ed57beabe.jpg

     

    2023-04-14-0854_3-Ha-Gain235_Exposure8.0ms_ZWOASI174MM-RGB.thumb.jpg.3f4e96d12eb2a377e3acac03d5678b18.jpg

    • Like 7
  11. Not easy to diagnose without an image of what you are seeing Dave but there are two potential issues that spring to mind.

    1. The heater on the etalon has failed or gone out of range - This would give you a featureless disk

    Does the red part get warm when its at green status? have you tried various dial settings?

    2. The blocking filter has gone out of band (due to age, heat etc.)

    Is the view washed out, lacking contrast but you still get some faint Ha features?

    Check out the following thread https://solarchatforum.com/viewtopic.php?t=25951

     

    case 1. is not really user fixable, are you within warranty (5 years for a quark I think)?

    case 2. is fixable - I just replaced the blocking filter in mine which was 7 years old and it has made a big difference (12.5mm Andover 656fs02 1nm).

     

    • Like 1
  12. Yesterday (25th) was my first decent length of session with the Lunt B1200 CaK module with the sun at a reasonable altitude.
    Seeing was not great with a lot of high haze but there wasn't much in the way of wind or clouds.

    I was able to test with various masks 100mm, 75mm and 50mm to figure out what the best option was for my Skywatcher ED120 DS pro (900mm f7.5).
    Camera was the ASI290MM (usb3 at around 120fps)
    The best by far from my session was 75mm giving f12, this is still a little bit undersampled but looks pretty good to my eyes.

    AR2976

    AR2976-2022-03-25.thumb.jpg.c3e35933378a047bc0f453e03bd451d3.jpg

    AR2976-2022-03-25-RGB.thumb.jpg.39bb43408768242b476197ae591d69ec.jpg

    FD

    FD-2022-03-25.thumb.jpg.27ac430eac0ea5570e1431f9cf59069e.jpg

    FD-2022-03-25-RGB.thumb.jpg.ea49939ac52b02d8a792b9562bad8e20.jpg

     

    Bonus image 😀 WL of AR2976

    AR2976-BW.thumb.jpg.9fe6a7998f830ab64a45eb030d5de071.jpg

    • Like 6
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