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Ok, I confess there's something I don't understand about WA lenses. For example, if I look through one of my scopes with a standard 5mm lens at (e.g.) Jupiter and then at it with a 5mm WA or SWA lens, would it be the same magnification with both lenses - would Jupiter be the same size????
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Thread: Wide Angle Lenses
- 12-04-2011, 10:43 PM #1
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Wide Angle Lenses
Telescopes: Celestron Omni XLT 120, Explore Scientific AR102, Orion ST80 Refractors; 8" Skywatcher Dob; Orion Apex 102 Mak; Coronado PST. EP's: ES 4.7, 6.7, 11, 18 and 30mm 82° EPs; Baader 24mm 68°; Luminos 15mm 82°; Meade 8-24mm Zoom. Other: CG4+16" Orion Pier Extension; Celestron 20x80 binos etc;
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Bortle 8
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The Bible tells us God created the Universe; Science tells us how He did it; And through my telescopes I marvel at His handiwork
- 12-04-2011, 10:51 PM #2
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Yes. But the actual FOV would be larger. With a 100x a 40 degree plossl would have a 0.4 degree (40/100) actual FOV. A 70 degree super plossl would have a 0.7 degree (70/100) actual FOV.
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AbbN (12-04-2011)
- 12-04-2011, 11:00 PM #3
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The planet would be the same size but the field of view would be wider ..Kind of like looking through one of your hands making a circle with your index finger and thumb versus a circle made with both of your hands using both index fingers and both thumbs ...Sames size but bigger pic. That is why plossl EP's are great for planetry stuff ..And wide angle EPS are great for DSO stuff.
16in Night sky
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F4.5 , 90mm refractor 500mm FL , 7in
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classic Big-mac , Meade eye pieces with a few odd balls thrown in ...
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Please stand in front of one ...
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