Wednesday, June 29, 2022

Widefield Veil

 

 

 

Full res here - https://i.imgur.com/920FNWb.jpeg

 

 

 

Other wide field shots here - https://photos.app.goo.gl/DrBxobexE9qLU8kbA

or

https://imgur.com/gallery/bFo3ZxQ

 

 

 

I was trialing out my new iOptron CEM120 with a few, smaller scopes to push my
wide-field skills.  I noticed something concerning right out of the gate with the C8i and overly simple right angle bracket that was not properly aligned on the axis of the OTA's rotation.  I was worried the mount was off so I swapped this setup:

 

 

 

 

For this one!

 

 

 

I removed the 4" Achromatic refractor and placed a better quality but smaller 200mm zoom lens in it's place.  It's the same imaging setup, a Canon 60Da with 200mm Canon EF 70-200 mm f4L IS USM that was on the Orange tube (the photo is old but the rest is the same.  I used the main OTA to do the guiding, which I know is overkill but it works!

 

I'm pretty happy with the results on the CEM120 and now need to figure out astroberry or get a 2nd Win10 computer for NINA!

Wednesday, June 22, 2022

Late Spring Inferior Planets

 

     

    I eyed up Mercury on the previous evening side apparition and failed to find it in the daytime.  Setting up the CGE and 14" during the day was too error ridden on alignment and I slewed and slewed in the hot sun endlessly to find nothing on 3x different days!  I decided, while this apparition wasn't as high in altitude, that morning would allow a stellar alignment and better opportunities.  Also having the 14" on the CEM120 was way too easy compared to no stellar align on the CGE!

     

    Here's Mercury

    https://i.imgur.com/Rq7HZPe.png


     

     

    I'm not 100% certain but I spent some time learning the lat/long system for Mercury in WinJUPOS and comparing to the USGS / IAU / NASA's atlas pages.  I do think I can spot part of Lugus Planitia or possibly the Water's crater (-15Lat / 106Long), the white spotted area seen in H7 - https://planetarynames.wr.usgs.gov/images/H-7.pdf

     

    While the seeing was poor I was quite happy to see Mercury and it's phase for the 1st time in 4 years.  Also of note, it's a derotation (not really needed I know) of 3x captures of 90s each and a stack of 2000 of the best frames.

     

     

    Here's Venus

    https://i.imgur.com/K4QuMCa.png


     

     

    False color is a substitute following:

     

    Red=InfraRed

    Green= 50%/50% (1:1) mix of IR and UV

    Blue=UltraViolet

     

    See all previous years here:

     

     

     

    

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