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MarsG76

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Posts posted by MarsG76

    When To Clean?

    in The Astro Lounge

    Posted

    A few speckles will not interfere with the performance of the mirrors.... clean as rarely an possible, but I personally use isopropanyl alcohol and distilled water, I never need to touch the mirror when cleaning as it dries streak free and clean like new.

     

    Silver Coin Galaxy - NGC253

    in Imaging - Deep Sky

    Posted

    Hello Astronomers,

    My latest image, The Sculptor Galaxy, also known as the Silver Coin or Silver Dollar Galaxy, NGC 253, an intermediate, starburst spiral galaxy in the constellation Sculptor, about 11.4 million LY away, undergoing a period of intense star formation.

     

    This photo was imaged in natural color through my 8" Celestron SCT at 2032mm focal length using my astro-modded and cooled canon 40D DSLR and tracked with a CGEM mount.

    I imaged this galaxy when the moon was nearly at first quarter and in the same general direction as the galaxy, so I used the Neodymium filter (AKA Moon and Skyglow filter) instead of the UV/IR Cut filter to try and control the moon glare, I think it worked.

    Total exposure time was 5 hours 41 minutes.

     

    Clear Skies,

    MG

     

    NGC253 RGB F10 Dec2019 Frm.jpg

    • Like 28

    My CGEM mount sudden DEATH!!!!

    in Discussions - Mounts

    Posted · Edited by MarsG76

    2 hours ago, todick said:

    {Hi just read this page

    My Celestron Advanced cg-5  gt mount has now developed a no response 17 or 16 error  (do not know why)

    can any body suggest where I can get a replacement  printed circuit board asap

    Tried a couple of Celestron Dealers here in the uk bust no answer  to date.

    Beginning to get withdrawal systems

    Thanks regards

     

     

     

     

     

    I got my replacement board from BinTel in Sydney, you can call/email them and see if they'll post overseas otherwise contact OPTCorp (OPTCorp.com) in USA, I got a lot of stuff from them and they're great, definitely ship overseas.

     

    • Like 1

    The Eye of god

    in Imaging - Deep Sky

    Posted

    Hello All,

    Sharing with you my latest image, The Helix Nebula (NGC7293), AKA "The Eye of god" in narrowband bi-color.

    Exposed for multiple nights during October and November 2019 through HII, OIII narrowband filters using my full spectrum modded and cooled Canon 40D DSLR through my 8" Celestron SCT at 2032mm focal length, tracked with a CGEM mount.

    Because a OSC sensor was used to expose this image, I was able to extract Hbeta from the HAlpha and OIII subs (in their corresponding blue channel) and stack them to be used as a real Blue channel in the final image. The green component from OIII is the green channel and red component in HAlpha is the red in RGB color mapping. Because of the use of a OSC camera, I did not have to generate a synthetic channel as is usually done with bi-color narrowband images.

    Clear Skies,

    MG

     

    NGC7293 HOO F10 OctNov2019 Frm.jpg

    • Like 16
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