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Does SkyTools Prefer Barlows?
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Newbie Alert!  I have a question about the "Ideal Eyepiece" column on the nightly planner screen.  I have profiled my telescope in the software with several lenses (30mm. 20mm, 12.5mm, 10mm and 8mm).  When I load a filter class (i.e. Planetary Nebula) the resulting list contains 2 nebulae that are best viewed with my 10mm eyepiece but also lists 16 nebulae ideally viewed with my 20mm plus a 2x barlow. 

Can someone explain why the software seems to prefer a barlow'ed 20 to a straight 10mm.  Wouldn't these provide equal magnification?

If it matters, both eyepieces are from the same series and have the same field of view.

Thanks!
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Messages In This Thread
Does SkyTools Prefer Barlows? - by Polaris - 2022-10-28, 03:35 AM
RE: Does SkyTools Prefer Barlows? - by PMSchu - 2022-10-29, 04:34 PM

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