Fridays Full Disk 22nd June

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marktownley
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Fridays Full Disk 22nd June

Post by marktownley » Fri Jun 22, 2018 10:49 am

Got the tilt on the camera sorted this morning with todays full disk - happily with this setup it needs very little which means todays disk is sharper from limb to limb. Hoping to laser cut some gaskets in a bit and then hopefully should be able to finalise the clocking of etalons for a more even illumination across the disk.

ImageHa-Full-Disk-bw by Mark Townley, on Flickr

ImageHa-Full-Disk-colour by Mark Townley, on Flickr

Taken with a pair external Lunt 50mm etalons, Tecnosky 60mm f6 apo, BF15 and PGR Ch3.

Mark
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Re: Fridays Full Disk 22nd June

Post by marios i. » Fri Jun 22, 2018 11:05 am

Wonderful images Mark.

Marios

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Re: Fridays Full Disk 22nd June

Post by marktownley » Fri Jun 22, 2018 11:11 am

Thanks Marios :)
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Re: Fridays Full Disk 22nd June

Post by ffellah » Fri Jun 22, 2018 11:30 am

Very sharp, great looking disks, Mark

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Re: Fridays Full Disk 22nd June

Post by Montana » Fri Jun 22, 2018 11:31 am

Very nice disc Mark :bow
I live in hope that it may be sunny this weekend ;)
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Re: Fridays Full Disk 22nd June

Post by krakatoa1883 » Fri Jun 22, 2018 3:44 pm

A uniform disk, Mark, with much contrast. The large spotless active area to the east is also well defined.
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Re: Fridays Full Disk 22nd June

Post by MalVeauX » Fri Jun 22, 2018 7:33 pm

Lovely disc!

Was this using FireCapture's version of flat calibration?

Very best,

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Re: Fridays Full Disk 22nd June

Post by Carbon60 » Fri Jun 22, 2018 8:21 pm

Very nice FDs, Mark. Looking good.

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Re: Fridays Full Disk 22nd June

Post by marktownley » Sat Jun 23, 2018 8:40 am

Cheers folks! These full disks are taken around f9, I use a barlow on a very short nosepiece to give me a magnification factor of ~1.25x, this allows me to maximise nearly full frame on the PGR Ch3. I also tried the etalon setup on the Tal100R as I had another adaptor plate made up. Here the images are running about f25 and the 3.45um pixels of the CH3 are just too small and at this scale a imx174 chipped camera with larger 5.86um pixels would be much better.

Imagear12713-ha-bw by Mark Townley, on Flickr

Imagear12713-ha-colour by Mark Townley, on Flickr

Imagear12715-ha-bw by Mark Townley, on Flickr

Imagear12715-ha-colour by Mark Townley, on Flickr

I think next time with the Tal I will not use the 1.25x barlow.

Just waiting for the haze to break this morning and hopefully get some good views later on.

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