Orion Sirius Plossl 20mm

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Brand and Model:Orion Sirius Plossl 20mm
Price ($USD):$49.95
Focal Length:20 mm
Barrel Size:1.25 in
Apparent FOV:50.0 degrees
Field Stop Dia.:0.0 mm
Eye Relief:0 mm
Weight (lbs):

Vote Highlights Vote
Orion Sirius Plossl 20mm
I bought one of these eyepieces a while back used, but in new shape, from a friend of mine. I love it. It has the FOV in my 4.5" F8 reflector as the supplied 25mm MA (1.1 degrees), and the optical quality makes up for the loss of brightness due to increase of magnification. It is sharp all the way to the very edge of the field of view, and shows very little chromatic aberration. This is definitely a VERY good deal for someone on a budget.

Overall Rating: 8
Optics:7 Value:9
Weight: 5 (Veritable Vote)
By: noahm3
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=125002

Orion Sirius Plossl 20mm
The 32mm and 25mm are the best of the Plossl line. Bright images, decent field of view, and good eye relief. When you drop below 25mm, the eye relief starts to get a little short. Below 10mm the eye relief is negligable - to the point where I won't use them even if I won them.

Overall Rating: 7
Optics:8 Value:7
Weight: 1 (Unreliable Vote)
By: Anonymous (xxx.xxx.242.231)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=409141

Orion Sirius Plossl 20mm
A decently sharp eyepiece. For the money, It is pretty good.

Overall Rating: 8
Weight: 1 (Unreliable Vote)
By: Anonymous (xxx.xxx.199.174)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=43130

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