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Thread: The moon - old nemisis now new friend

  1. #1
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    Default The moon - old nemisis now new friend



    moon - 03/28/18 23:38

    For more than 20 years I was a DSO addict. Doing what I could at home and waiting for the trips to very dark skies. The moon was my nemesis for it limited what nights I could chase those faint fuzzies. Now with EAA I can go as deep as I want in Portland's Bortle 5/6 skies. I used to look at the moon every now and then with binoculars or my C90 (great optics/takes time to cool down).

    My 20 x 80 binoculars are very good on the moon but limited to that single magnification. As my return to astronomy over the last several months included the purchase of a 102 triplet and the venerable Orion ST80 used, I've made the ST80 my quick peek tool. Very little time to use it due to the Oregon clouds. Then last night I went out for about an half an hour with the ST80 and decided to spend some time with the moon (check what I saw in the Virtual Moon Atlas today).

    My quick peek setup includes 1 1/4" 32 and 7.5 mm plossl and my daytime 1 1/14" right viewing prisim diagonal used in the GSo 2" focuser (what a dream to focus with). The 32mm provides magnification of 12.5X/fov 4.16 degrees and the 7.5mm provides mag 53X/fov .93 degree.


    The ST80 had the yellow fringing with the 32mm but I could use the built-in mask in the cap to eliminate it with the 32 if I wanted. No fringing with the 7.5mm. Using my other scopes fringing is not an issue, but it really didn't bother me. But the sharpness of the view did certainly amaze me. Sharp and very good contrast it was says Yoda.

    With such a modest equipment I was really, really surprised. I will say that the GSO focuser made a huge difference in obtaining critical focus.

    Performance with the 32mm plossl. This is an Orion Sirius plossl I bought in 1996 which gives great views for such an inexpensive EP. I have a red dot finder on the scope and it with the generous FOV made finding the moon a pretty trivial effort. What amazed me was the amount of detail I could see, yes the fringing was there but it didn't bother me. It was the detail on the moon that blew me away with this little scope. Everything from Mon Bradley to Werner was detectable and very sharply defined. After 5 minutes or so using the 32mm I thought, why not try the 7.5mm and see what kind of detail the higher magnification can bring.

    Performance of the 7.5mm (a "freebee" as was the diagonal when I bought a used C5), it was an Adorama branded Plossl. I've never really used it before. Well it presented detail that was extremely good at about the middle of the magnification range for the ST80. Perhaps the most interesting feature was what I believe to be Bode. Extremely high reflectivity of its sides at this time. Really, really bright for such a small feature.

    Although I see much of clear sky time using my bigger scopes with EAA here in the city, I can see the moon and this scope will be a fun adventure to catalog the various features in 30 minute adventures. I think I will be using a mirrorless camera/100mm lens to take a couple of quick images so I can use the moon atlas for a detailed report on what I've seen.

    For those times when the moon is up and bright, I will for those quick peek times see my new friend with the ST80 who performs much better than I expected.
    C90 (USA Rubberized, 1996), C8 (2000), ES 102 Triplet (2018), Orion ST 80 w/2" GSO focuser (2018), Starmaster 20 x 80 (2015), Eagle Optic Rangers 10 x 50 (2004), Sirius AZ-EQ G PRO (2018), LXD75 (2" legs, 2007), SLT (2008), Manfrotto 055 CF (2007) , ZWO224, Panasonic Gx8 (8 second live view, 4 shot stacking in camera)
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    Default Re: The moon - old nemisis now new friend

    Congratulations on discovering the Moon
    There is a lot to see and explore so enjoy the outings!
    Refractors: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen SD115s f/7.7
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    / camera. - Gabrielle

    Ya gotta keep this Apo/
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    Default Re: The moon - old nemisis now new friend

    Wait for the lunar terminator to be along the highlands. That is an impressive sight. It turns the flat 2-D face we are accustomed to into the 3-D sphere it is!

    Also, if you observe long enough, you can start to detect libration events and see patches of the moon that are more often than not hidden on the dark side of it.

    Lots to behold when it is busy ruining DSO hunts!

    Chris

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    Default Re: The moon - old nemisis now new friend

    The moon has always been like a familiar old friend to me. I never seem to tire of gazing at the craters, seas and rills.
    SpyderwerX likes this.
    Two tired old brown eyes; Meade
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    Default Re: The moon - old nemisis now new friend

    I should have mentioned that from time to time I have peek at the moon with my C8 with 6.3mm plossl EP and on those rare occasions with very, very good viewing the sights were amazing. With EAA I can now chase the rest of the 2500 Herschels (actually 1800 from my yard) even with the moon shinning brightly.
    SpyderwerX likes this.
    C90 (USA Rubberized, 1996), C8 (2000), ES 102 Triplet (2018), Orion ST 80 w/2" GSO focuser (2018), Starmaster 20 x 80 (2015), Eagle Optic Rangers 10 x 50 (2004), Sirius AZ-EQ G PRO (2018), LXD75 (2" legs, 2007), SLT (2008), Manfrotto 055 CF (2007) , ZWO224, Panasonic Gx8 (8 second live view, 4 shot stacking in camera)
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