July 14 2008 Moonage

[sheeny]

Here's a selection of the lunar shots I took last night while waiting for the Antares Occultation.

C8, DMK, IC Capture, negative projection with 2.5x Powermate and secondary focus, stacked and wavelets in registax, final presentation in PS CS3. Seeing was poor so afteer the initial attempts with the powermate, I reverted to secondary focus.

Because I'm so out of practice, I forgot all about a UV/IR filter...:rolleyes::whistle:

Al.

[WadeH]

I have absolutly no idea what half (read most) of those terms mean but WOW! Al, what a great set of images. BTW, what does a UV/IR filter do and is it mostly for imaging?

You definatly know how to fill time.

I particularly like the last three.

:thumbsup:

[Screwdriverone]

Hey Al,

Nice set of shots, very clear and great details showing on the crater edges.

Wouldnt this be called a Moontage though? ayuk ayuk ayuk yuk! :lol: :rofl:

Cheers

Chris :)

[sheeny]

A UV/IR filter blocks any UV and IR light from entering the camera. Different wavelengths are refracted at different angles as you know, so they focus at different distances from a lens. So you can get sharper images by focussing a narrower bandwidth of light.

For my scope the only lenses I have to worry about are the corrector plate and the Powermate. Maybe, if I'd used a UV/IR filter the high resolution images could have been sharper...:shrug::P ...but I think the seeing was the major cause of the softness in the images.


The last three were taken at secondary focus, so being lower resolution (around 1km per pixel instead of about 400m /pixel with the powermate) means the seeing had less of an adverse effect, and also any blurring due to UV and IR light entering the camera was only that due to the corrector plate.:)

Al.

[sheeny]

:lol: Possibly....

Thanks Chris!

Al.

[iceman]

Nice images, Al. You can tell the first 3 were impacted by the seeing. The last 3 are great!

[sheeny]

Thanks, Mike.

Yep. I persevered at Hires for a while for a while, but conditions just weren't good enough.

Al.