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Mogey 3" Brass Refractor

Discussion in 'Vintage Telescopes & Equipment' started by Bomber Bob, Oct 3, 2015.

Mogey 3" Brass Refractor

Started by Bomber Bob on Oct 3, 2015 at 2:36 PM

44 Replies 6050 Views 2 Likes

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  1. Bomber Bob

    Bomber Bob Well-Known Member

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    Everything is better with brass! I snatched up this antique Mogey 3" refractor about three months ago:

    Antique Brass 3IN Refractor EB01.jpg
     
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  2. Bomber Bob

    Bomber Bob Well-Known Member

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    No mount, but here's what it would look like on an alt/az:

    Mogey 3IN Refractor (A-Mart) P01.jpg
     
  3. Bomber Bob

    Bomber Bob Well-Known Member

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    It's a 76mm clear aperture 1100mm FL f/14.5 achromat. Except for a pin-sized chip in the outer face of the flint, the uncoated lens is in very good condition for its age.

    AB3R - Lens Cell and Retainer Marks 01.jpg
     
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  4. Bomber Bob

    Bomber Bob Well-Known Member

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    Not easy to see in this photo, but the retaining ring has three raised areas - just like Clark & Zeiss refractors circa 1900.

    AB3R - Lens Cell Exploded 01.jpg
     
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  5. Bomber Bob

    Bomber Bob Well-Known Member

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    It came with one eyepiece, a #15 Triple Alliance (Bausch & Lomb Optical Co.; Carl Zeiss, Optical Works, Jena; & George N. Saegmuller), with the unusual 1.125" barrel diameter. Its glass is in excellent shape.

    P02 - BZS 15 Eyepiece 1.jpg
     
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  6. Bomber Bob

    Bomber Bob Well-Known Member

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    No star tests yet due to our Monsoon Summer, but the terrestrial views are good, considering that the internal baffles were removed at some point in the past. I won't start restoration until my other projects are done. Meanwhile, I'll be on the lookout for Mogey eyepieces & accessories, and the probably nonexistent equatorial mount.
     
  7. Crow Haven

    Crow Haven Well-Known Member

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    Looking forward to your reports as you restore this great scope!:D
     
  8. Bomber Bob

    Bomber Bob Well-Known Member

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    My Fall / Winter restorations:

    1. Edmund mount completion for the JaegerMeister (Jaegers 4" f/5 RFT);
    2. Tinsley 6" Cassegrain - mirror recoating;
    3. Questar Barlow & control box optics cleaning;
    4. Mystery Maksutov (6" MCT) baffling and new exterior paint;
    5. Mogey 3" refractor polish, baffle, & paint.

    Whew! Looks like a very busy 6 months!
     
  9. clintwhitman

    clintwhitman Well-Known Member

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    Bob very nice Mogey I like the fact it has patina has been left intact. You might think about a cleaning method that leaves most of the Patina. To many polished scopes out there....
     
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  10. Astro_Padawan

    Astro_Padawan Member

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    I love a nice patina as well just not the oxidation. Love the look of it. I'm looking forward to future updates when you get back to this.
     
  11. Rob Wiederrich

    Rob Wiederrich Member

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    Nice little find........that would be great as a terrestrial nautical instrument set up in or up by a widows perch.........Or..... as a Vernian lovers lunar instrument.

    Rob
     
  12. Bomber Bob

    Bomber Bob Well-Known Member

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    Thanks Y'all! I just got this old (1950s?) Jaegers GEM & tripod. Hard to tell in the photo, but it has lots of brass under all the paint...

    Jaegers GEM and Tripod P00.jpg
     
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  13. Crow Haven

    Crow Haven Well-Known Member

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    That will sure be a beauty cleaned up!
     
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  14. Bomber Bob

    Bomber Bob Well-Known Member

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    Mogey's first star test last night in 7/10 seeing. Due to the weird accessory size, I clamped a decent old .965" adapter to the drawtube, and put the scope on my Edmund 4" EQ (the Mogey is heavier than the Edmund by a couple of pounds at least).

    Mogey on Edmund GEM 02S.jpg
     
  15. Bomber Bob

    Bomber Bob Well-Known Member

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    Despite intermittent/spotty mid-level haze she gave very good Airy disks on Deneb, Capella, and other stars - symmetrical on both sides of focus. I cruised the Cygnus Milky Way at 37x, and easily spotted M29. I haven't baffled her yet, so her contrast & space backgrounds aren't as good as my Royal 76x1200, but the low power views are pleasant. Beautiful Pleiades. After resolving my favorite doubles in Delphinus, I nabbed M15. She took magnification well, and started resolving the globular at 122x. My Royal shows M15 as less round, with a dark gap in the NW quadrant - didn't see that in the Mogey. But her round puffy Q-tip view was nice.

    Now that I know her capabilities, my restoration will be for astronomical use. I'll probably restore the old Jaegers GEM first. It has huge setting circles that would be a knock-out if engraved & painted, and lots of brass hardware on the tripod that's been covered in paint a couple of times. I've seen Mogey OTAs in dark blue or black, along with some where all the brass is bare & polished, and a few that were left with patina. The decision was easier with the Tinsley - it has an aluminum tube that's always been painted.
     
  16. clintwhitman

    clintwhitman Well-Known Member

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    Bob thanks for the report, great job. Sounds like you found a good objective. The Mogey I have used belongs to Dan Schechter's and I think he has a 3" I don't remember it blowing my mind, but that's because Dan probably had a 4" Clark set up next to the Mogey!
     
  17. Bomber Bob

    Bomber Bob Well-Known Member

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    The 3" Mogey at KSU. Like mine the focuser flange / base fits inside the tube, and the knob has the square cut-out to fit the gear shaft:
    Mogey 3IN Refractor (KSU) P04.jpg
     
  18. Bomber Bob

    Bomber Bob Well-Known Member

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    Here's my Mogey after the first cleaning:
    Mogey - 1st Cleaning 20151228CN2.jpg
     
  19. Bomber Bob

    Bomber Bob Well-Known Member

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    The full OTA:
    Mogey - 1st Cleaning 20151228P01.jpg
     
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  20. Bomber Bob

    Bomber Bob Well-Known Member

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    The KSU Mogey lens. It has 3 thin pieces of paper (?) separating the elements, so I'll remove the old postage stamps, and go with something similar - see if that improves the views.
    Mogey 3IN Refractor (KSU) P02.jpg
     
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