From: Willie Strickland <cwskas@earthlink.net>

Date: December 10, 2009 4:00:11 PM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Re: Occultation a bust for me

The scope is F9 and FL 5490.  I can use pretty close to the same exposure for the DMK that I use for the main science camera.  I had the DMK in the guide port centered on the star and the main camera centered on the star as well.

I can only image with one or the other in this setup, I just move the mirror slide into the light path to image through the guider port.  I was following on the main camera and ready to switch to video if conditions improved.

I just checked and IOTA needs 10 fps or greater, I thought it was 15fps.  I could tell conditions were not going to allow 15fps, so I figured I would just video the transit anyway if conditions improved enough.

Willie

On Dec 10, 2009, at 12:25 PM, Milton Aupperle wrote:

What aperture and focal length was the scope?

I was shooting Eros at Mag 10.5 to 11.5 using 2 minute exposures on the EXHad Grasshopper Camera. That was a bit much and I likely should have dropped to 1 minute for proper saturation.