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class="prefix prefixSilver">Discussion Mono & Bino Viewing with the Baader Morpheus 17.5mm Eyepiece Discussion

Discussion in 'Eyepieces, Barlows, and Filters' started by AstronomyConnect, Mar 5, 2018.

Mono & Bino Viewing with the Baader Morpheus 17.5mm Eyepiece Discussion

Started by AstronomyConnect on Mar 5, 2018 at 12:00 AM

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  1. AstronomyConnect

    AstronomyConnect Staff

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    AstronomyConnect, Mar 5, 2018
    #1
    Baader markets their Morpheus line as "high-end" 76° apparent field of view (AFOV) eyepieces designed for visual / photo / video functions that can exploit the capabilities of the finest telescope optics. The eyepieces have an optical design that utilizes 8 lenses in 3 groups and includes the use of three low dispersion ED elements and one Lanthanum element. With the introduction of the 17.5mm, there are now six eyepieces in the line including 14mm, 12mm, 9mm, 6.5mm, and 4.5mm. All eyepieces can be used in either 1.25" or 2" focusers without adapters. The Morpheus line touts a rather long list of features and comes packaged with multiple accessories.

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  2. BillP

    BillP Well-Known Member

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    BillP, Mar 5, 2018
    #2
    UPDATE - Beautifully dark and clear here last night so took out my Celestron Onyx, 80mm f/6.25, 500mm focal length. So this optic, which is an FPL-53 doublet, should show a lot more field curvature (FC) than my other scopes. I observed Sirius as the test case, then on to M42 (Iota to the cluster above 42 Ori was in the FOV so more than the entire Sword), then over to Pleiades. Sirius at the field stop showed no astigmatism with the 17.5mm Morpheus, and just a bit of a bloated star from the FC present from the main optic. Only a little less than 1/4 turn of the focuser knob was needed to bring it to pinpoint focus. Moving on to M42, with that centered everything looked just great and no malformed star points. Moving to M45 Pleiades, there was more than enough room to fit this in its entirety and all the star points beautiful. So eyepiece put up beautiful view in a 500mm focal length optic with lots of FC due to short focal length. I was not using any prisms in the light path; was using a Baader BBHS Silver mirror diagonal. Lots of prism path can impact different things, and whether in a diagonal or in a binocular with interchangeable eyepieces, is another component in the chain that can cause what one sees instead of the eyepiece. But for a conventional fast doublet ED Apo telescope with no prism path that has a short focal length, views were quite beautiful with only minimal star bloat to the round star point at the field stop. Quite nice to see no astigmatism even in this fast of an optic.
     
    Last edited: Mar 5, 2018
    Dave In Vermont likes this.
  3. TheLookingGlass

    TheLookingGlass Member

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    TheLookingGlass, Mar 10, 2018
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    Incredible review Bill!

    Thank you sir! :)
     

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