Image of the day

Captured by
mikhail vasilenko

NGC4216 with supernova 2024gy

My Account

New to Astromart?

Register an account...

Need Help?

Posts Made By: Craig Burlette

December 22, 2002 01:23 AM Forum: Equipment Talk

Eyepiece for an f4 reflector

Posted By Craig Burlette

I just recieved my new Orion Skyview Deluxe 8 EQ Newt and was wondering if anyone has any recomendations on eyepieces for this scope? I would like one eyepiece for the best close up views possible of the planets, as well as a good choice for deep sky work. This scope is relatively fast at 800mm f4 and I understand it can be difficult to shop for. I have the included 25mm and 9mm plossls as well as a 3.7mm Orion Epic ED-2, which gives dissapointing performance. Does anyone have this scope and any recomendations?

February 5, 2003 04:56 AM Forum: Telescope Making

Rotating Tube Rings

Posted By Craig Burlette

I am interested in rotating tube rings for EQ mounted scopes like the Cave Astrola or Criteron types. Anyone know of a source for these? Anyone use this type of a set up? It seams to me that this would be a very desirable feature in an EQ mounted scope.

February 14, 2003 02:37 PM Forum: Telescope Making

Curved vane spider

Posted By Craig Burlette

I'm looking for a source for curved vane spiders, anyone have any suggestions? Has anyone changed from a standard 3 vane spider to a curved vane spider?

February 26, 2003 11:06 PM Forum: Telescope Making

Information on mirrors

Posted By Craig Burlette

I am interested in building a 10" f5 or f6 reflector, this will be my first homebuilt scope and I'm looking for a good source for the primary mirror. Has anyone used a Burgess mirror?

March 12, 2003 11:55 PM Forum: Telescope Making

Help with Mirrors

Posted By Craig Burlette

I would like to know what is meant by a mirror being 1/4 wave or 1/8 wave and diffraction limited. Am I right in assuming that a 1/8 wave mirror is better than a 1/4 wave mirror? Is it "twice" as good? Is it reasonable to assume that a mirror that is listed as 1/10 wave could actually be worth $200, or would it be deffective in some other way? Has anyone heard of a mirror that is 1/15 wave for less than $300? What do they mean by saying a mirror is diffraction limited? How would a diffracion limited mirror compare to any of the above mirrors?
Thanks from a Newbie.

April 8, 2003 01:32 PM Forum: Equipment Talk

July 8, 2003 03:33 AM Forum: CCD Imaging and Processing/Solar System

Looking for a Macintosh stacking program

Posted By Craig Burlette

I'm looking for a way to stack photo's with a Macintosh, any idea's or help is appreciated.

July 26, 2003 02:49 PM Forum: Telescope Making

Help verify my calculations

Posted By Craig Burlette

I’m just about to finish a wooden tube for my 10” f5 scope, could yall help me doubble check my calculations before cutting the hole for the focuser? The mirror is 10” f5 with an actual focal length of 49.25”, the tube inside dia is 11.25” the focuser is a JMI dx2 with a fully racked in height of 2” to 3.5” fully extended. I figure with 3/4” extra on the focuser height would give me 8 3/8” off the focal length to net a focuser hole 40 7/8” from the face of the mirror. I currently have a 2.14” secondary but my calculations would indicate a 1.83” to be preferable. Any comments or suggestions will be greatly appreciated.

August 1, 2003 03:23 AM Forum: CCD Imaging and Processing/Solar System

Where to find a Toucam pro?

Posted By Craig Burlette

Where in the US can you buy the Philips Toucam pro? What about a good website dedicated to webcam astronomy and camera conversion?

August 10, 2003 02:54 AM Forum: CCD Imaging and Processing/Solar System

Which way to go?

Posted By Craig Burlette

If you were just getting into ccd photography would you go with a webcam setup, or an eyepiece camera like Orions? What are the pro's and con's of each?