Harry Siebert Optics Standard 3.9mm

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Brand and Model:	Harry Siebert Optics Standard 3.9mm
Price ($USD):	$89.00
Type:	Misc Wide Angle
Focal Length:	3.9 mm
Barrel Size:	1.25 in
Apparent FOV:	65.0 degrees
Field Stop Dia.:	0.0 mm
Eye Relief:	7 mm
Elements:	5
Weight (lbs):	0
Description:

Vote Highlights

Harry Siebert Optics Standard 3.9mm

I was skeptical of a comparitivle cheap ep of this focal length when I bought the Siebert 3.9mm. Any skepticism was removed uppon my first use of the ep.

This ep provides my highest power, without a barlow, on my DGM OA-4 and my Pronto. The image is very sharp and focuses with relative ease. The 13mm eyelense is very nice; it feels like looking through normal a 13mm ep. Images are sharp to the edge. The image is superior in sharpness and contrast to a 7mm Nagler/Celstron Ultima 2X Barlow combo, or RKE 8mm with the same barlow. Also far superior to a 12mm Nagler and 2.5x Powermate combo. Very light ep, which is nice for balancing the 'scope.

Minor ghosting, hence the 9 for the optics. Otherwise, a very, very great ep. Other than a Radian of similar focal length, this ep would be hard to match, let alone beat. A pleasure to use. Gotta give it a 10.

Overall Rating: 10
Optics:9 Value:10
Weight: 10 (Trustworthy Vote)
Date: 01/16/2002 06:56:04 pm PST
By: YrrekR
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=57200

Reply Replies: 0

Harry Siebert Optics Standard 3.9mm

Excellent ep. Able to see bands on Jupiter at 123x on TV Ranger. Harry is a pleasure to deal with. Good wide field of view.

Overall Rating: 10
Optics:9 Value:10
Weight: 3 (Unreliable Vote)
Date: 05/30/2002 09:40:30 am PST
By: Anonymous (xxx.xxx.12.135)
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=97295

Reply Replies: 0

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