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daz

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Posts posted by daz

    NGC2430

    in Imaging - Deep Sky

    Posted

    After what seems forever and ever, my observatory is finally back up and running and I'm able to image properly again! Having taken delivery of my ZWO533MC Pro earlier this year, I managed to get a test run at Kelling and followed this up once I got the kit installed in the new box...

    And of course, I have to re-remember how to process the data - that might take a while!!

    Anyway,, here is NGC2403, discovered by William Herschel in 1788 and part of the M81 group - part of the larger Coma-Sculptor Cloud. 

    • Camera: ZWO ASI533MC Pro, guided with ZWO ASI120MM Mini
    • Scope: Skywatcher Esprit 100ED
    • Mount: Skywatcher AZEQ6
    • Exposures 63 x 300s, calibrated with flats, darks and dark-flats
    • Processing: Pixinsight

    Processing was done with the new version of WBPP, splitting the RGB channels and registering each channel individually. Each channel was then run through NSG and integrated (cut off at weight of 50). The stacked masters were then given a touch of Mure Denoise before being Star Aligned and then ChannelCombination to give the RGB.

    A series of curves, ColorSaturation boosts, and a nifty process to try and boost the definition in the arms, before TGVDenoise, colour desaturation on the background and a final tweak with MMT.

    Much of this is putting learnings into practice from Adam Block Studios into practice, with copious references to Inside Pixinsight (Warren Keller), and Mastering Pixinsight (Rogelio Bernal Andreo)!

     

    I think I could have pushed the colour harder, and I might yet have another go round with it.

    Anyway, this will do for now.... c & c welcomed of course!

     

    NGC2403_211102_djehan_sm.png

    • Like 5

    Fingers crossed this year!!!

    in SGL SP2022

    Posted

    Welcome to the 2022 board!!

    So, we are very hopeful that we will be able to hold some sort of event next year - it would be fantastic to see people face to face enjoying the hobby that we love!

    We are going to pay a visit to Lucksall in the next couple of weeks to talk to them about what is possible - and to check that the site still works for us. We know there have been some changes, but not sure to what extent just yet. 

    And because we are a caring team, we'll be checking that the breakfast in the café is up to standard. I know it's tough, but we're dedicated like that!! ;)

     

    Anyway, fingers crossed it is good news and we can start to make firm plans!

    • Like 16

    What is the difference between Darks and dark flats?

    in Getting Started With Imaging

    Posted

    11 minutes ago, bluesilver said:

     Darks are taken with the exact same settings as your lights,  but just with the cover on the scope,  I think that is correct?

     

    Yep

    11 minutes ago, bluesilver said:

    Is there a target ADU or a target histogram that i should be looking for when doing flat darks?

     

    You're not looking at the histogram for flat-darks. For flats, yes, but not for flat-darks. You're just doing the same as the darks for the light frames - same temperature, cover on.

    For flats, you're aiming for somewhere between 1/3 to 1/2 way on the histogram, and somewhere between 50-75% saturation. Focus position and camera orientation need to be the same as when you took the light frames. If you move the camera, the dist donuts won;t match the flats. You'll need to experiment for your camera... 

    Doesn't matter for the darks, there is nothing to see - as long as the temperature is the same.

     

    SGL Starparties

    in SGL SP2019

    Posted

    On 23/09/2021 at 10:27, teoria_del_big_bang said:

     

    @daz Any chance we can start a new thread for 2022 with the hope then we shall get something arranged as it gets a bit depressing looking forward in a 2019 thread ?

    Steve

    Yes chap! It would indeed be look to start looking forward!

    • Like 1
    • Thanks 1

    Big Favour - Dataset required for TYC 237-901-1

    in Imaging - Deep Sky

    Posted

    Thanks Paul

    You helped in the fact you are correct on the star!!! Fat fingers from the keyboard operator!

    I was hoping to avoid the need to relocate the scope to get a better horizon (my house is in the way!!) - but I've just remembered I'm going to Kelling for Winterfest in December, so will pray to all the Deities of Clear Skies that the clouds stay away!!

    • Like 1

    Early dusty M45

    in Imaging - Deep Sky

    Posted

    Oh that is very nice! Adam!

     

    24 minutes ago, Scooot said:

    I can’t remember if you use Pixinsight & wondered if you’d used their new debayer and alignment of RGB data separately to better align the stars. I haven’t yet but it looks as if it would certainly better align the colour focus on osc cameras.

    I had a quick play with that yesterday - looks to be pretty good!

    • Like 2

    Big Favour - Dataset required for TYC 237-901-1

    in Imaging - Deep Sky

    Posted

    Hi all

    Am hoping someone in the Southern Hemisphere can help...

    Am after a data set centered on the star TYC 237-901-1 (Gaia DR2 3834246880008018944) in Sextans - LRGB plus calibration frames.

    There are a couple of nice looking NGCs in the wider field (NGC3042 and NGC3043) which would be great if they could be included, but the star is the main focus (It's for a friend at work, his Father in law passed recently and they bought a star deed. He is hoping to get an image for his wife....)

     

    Can anyone help?

    Thanks!

    EP46 - Saturday, 8th May 2021 7:30pm BST - Pixinsight - Advanced Calibration Concepts by Adam Block

    in StarGaZine

    Posted

    Links

    During the talk, Adam showed the Photometric Colour Calibration module and mentioned that the catalogues could be downloaded. He also showed the GAME script for the Selective Rejection method,

    GAME - courtesy of Herbert Walter - can be downloaded from his repository at: https://www.skypixels.at/HVB_Repository/  (In PI, go to Resources, Updates, Manage Repositories, then add this URL). There are lots of different scripts that Herbert makes available too.

    image.png.6ab5b7322c50d442adebdbe51908de4c.png

    The database files for PCC are now available to download via the PI Software Distribution platform. So, login to your account and they are with your normal software downloads. Additional information can be found on the PI forum at: https://pixinsight.com/forum/index.php?threads/new-in-pixinsight-1-8-8-6-gaia-dr2-local-database.15385/

     

    Grant will get the video up in the next day or so - and we're hoping to arrange another session with Adam in the not too distant future!

     

    • Like 3
    • Thanks 3
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