Night Playing with 1000mm Catadioptric

Playing with 1000mm Catadioptric · 10:16 PM

Playing with 1000mm Catadioptric lens...

manntax · 05-14-2014, 01:06 AM

Strangely soft to be honest - perhaps little be out of focus ? I suppose with 1000m lens one could get in trouble with focusing

Anyway photographing the moon is a difficult thing as I found myself trying to do that not so long ago. I didn't do that well altogether but I would like to link my thread for you because other forum members gave me loads of good info on how to achieve the best results. LINK: My first attempt to shoot the Moon :)

>>-manntax-->

45 Mike · 05-14-2014, 10:18 AM

Yep, moon shotz can be problematic. You can get the focus and exposure perfect, but then a waft of atmospheric ripple shows up and it looks like you shot it in a bathtub with kids splashing. LOL
Is this a Celestron? I have an Opteka 500 cat and the Celestron 1000 cat. I use my Rokinon 650-1300 more than the cats.

Not a Number · 05-14-2014, 11:42 AM

I have a Celestron C-90 I bought in the early 80's. I've never been able to get any moon shots clearer than this. The lens isn't very sharp to begin with. The contrast is a bit low too. An improvised lens hood isn't much help there. The field of view is so narrow that you can actually see the moon moving through the FOV.

DeadJohn · 05-14-2014, 11:59 AM

EXIF says 1/13 sec shutter. Even on a tripod that's slow for 1000mm. Increasing the ISO from 100 to 800 will yield a 1/100 sec shutter. See if that gives a sharper image. Use the 2 second timer to decrease camera shake (which will also turn off shake reduction, which should generally be off on a tripod anyway).

OregonJim · 05-14-2014, 12:03 PM

Originally posted by 45 Mike

Is this a Celestron?

Yeah, an old Celestron cat. That's why I said I was "playing" - yes, the lens is soft and not too contrasty, but in a cool, old-school sort of way...

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05-14-2014, 01:06 AM	#2
manntax Veteran Member Join Date: Jan 2012 Photos: Albums Posts: 1,972	Strangely soft to be honest - perhaps little be out of focus ? I suppose with 1000m lens one could get in trouble with focusing Anyway photographing the moon is a difficult thing as I found myself trying to do that not so long ago. I didn't do that well altogether but I would like to link my thread for you because other forum members gave me loads of good info on how to achieve the best results. LINK: My first attempt to shoot the Moon :) >>-manntax-->

05-14-2014, 10:18 AM	#3
45 Mike Veteran Member Join Date: Feb 2014 Photos: Albums Posts: 1,350	Yep, moon shotz can be problematic. You can get the focus and exposure perfect, but then a waft of atmospheric ripple shows up and it looks like you shot it in a bathtub with kids splashing. LOL Is this a Celestron? I have an Opteka 500 cat and the Celestron 1000 cat. I use my Rokinon 650-1300 more than the cats.

05-14-2014, 11:42 AM	#4
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	I have a Celestron C-90 I bought in the early 80's. I've never been able to get any moon shots clearer than this. The lens isn't very sharp to begin with. The contrast is a bit low too. An improvised lens hood isn't much help there. The field of view is so narrow that you can actually see the moon moving through the FOV.

05-14-2014, 11:59 AM	#5
DeadJohn Pentaxian Join Date: Jan 2011 Location: New York Posts: 4,834	EXIF says 1/13 sec shutter. Even on a tripod that's slow for 1000mm. Increasing the ISO from 100 to 800 will yield a 1/100 sec shutter. See if that gives a sharper image. Use the 2 second timer to decrease camera shake (which will also turn off shake reduction, which should generally be off on a tripod anyway).

05-14-2014, 12:03 PM	#6
OregonJim Veteran Member Join Date: Mar 2009 Location: Willamette Valley, Oregon Posts: 1,327 Original Poster	Originally posted by 45 Mike Is this a Celestron? Yeah, an old Celestron cat. That's why I said I was "playing" - yes, the lens is soft and not too contrasty, but in a cool, old-school sort of way...