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Posts Made By: Eric Pieninck

August 23, 2004 08:24 AM Forum: Telescope Making

Collimated but with severe spherical abberation?

Posted By Eric Pieninck

Hello All,

I am in the process of trying to collimate my 8" dob project and purchased a laser tool to facillitate the process. I was able to get the laser dot to line up correctly, and then took the scope out last night for the first time. I noticed I was getting a soft image, so I went out of focus on a bright star and noticed the disk bending to the right forming a 'C' rather than an 'O' pattern. Below is similar to pattern:

The scope is showing collimated per the laser tool, but I know there must be an adjustment/alignment issue (so I'm confused at this point). Any advice?

Thanks in advance,
Eric

September 25, 2004 02:19 AM Forum: Equipment Talk

Edmund RKE - Vintage vs New Differences?

Posted By Eric Pieninck

These are still produced by EO but are they the same as the ep from years back? Are the newer eyepieces still produced domestically?

Thanks in advance,
Eric


October 13, 2007 03:28 PM Forum: Pictures of Me and My Telescope and........

Muh Meade

Posted By Eric Pieninck

Meade 152 on G11

July 21, 2010 04:51 PM Forum: Film Astrophotography - Imaging and Processing

NA Nebula - OM1 - 200mm lens @ f4 - E200

Posted By Eric Pieninck

From Cherry Springs State Park in Potter Co., PA



August 23, 2004 05:26 PM Forum: Telescope Making

Collimated but with severe spherical abberation?

Posted By Eric Pieninck

grin

Adjusted the secondary, per the instructions on site and presto the image drastically improved

December 5, 2004 03:15 PM Forum: Pictures of Me and My Telescope and........

The Morning After

Posted By Eric Pieninck

Hi Dave,

I am a few hours from that site, how is the observing?

Thanks,
Eric

October 1, 2007 04:30 PM Forum: Equipment Talk

Gemini v. Losmandy DSC and Digital Drive

Posted By Eric Pieninck

I recently upgraded my G11 from a DSC setup to Gemini, and yes I find the Gemini is far superior for imaging. This is mainly due to the autoguider option, but also accuracy of the goto consistently puts objects in the center of the fov.

October 4, 2007 10:23 AM Forum: Equipment Talk

My G-11 with 127ED and 80mm Guide Scope

Posted By Eric Pieninck

Floyd, did the WO dual speed require any modification to fit the Wyorock? I'm thinking of going that route as well.

July 29, 2010 02:53 PM Forum: Film Astrophotography - Imaging and Processing

Rosette from last year

Posted By Eric Pieninck

Impressive shot Thomas grin

That's one object I would like to get on film this year.