Full Frame Moon Shot with 400 f5.6 L & EF 2X?

Does anyone have a moon shot to share, that was taken with a full frame camera, and 400 f5.6 L (not the 100-400L) and an EF 2X iii extender?

I'd like to see the whole, uncropped, image: I'd like to see how much of the frame the moon fills up (which will vary based on the moon's distance to the Earth, of course), and what the detail on the moon is like.

I'm mulling over the purchase of the lens, specifically for moon photography. Based on the specs I've read, the lens should retain autofocus and be f11 with the extender.

You can use a field of view calculator like this one.
For your setup, aperture would be 400/5.6 = 71mm and a 2x Barlow is astro-speak for your converter. Select "Moon" from the objects menu.

Steve.

SteveInNZ wrote in post #16713749
You can use a field of view calculator like this one.
For your setup, aperture would be 400/5.6 = 71mm and a 2x Barlow is astro-speak for your converter. Select "Moon" from the objects menu.

Steve.

Thanks, Steve! That was so incredibly helpful.

As it turns out, I'm not going to fill as much of the full frame as I thought I would with the 400 & 2x. My crop body would give me the coverage I'm looking for, but the full frame won't. I'd need to add another extender to the mix, which would just obliterate the aperture. The more it fills of them frame the harder it will be to track, so I could be a bit over ambitious in the coverage I want to see.

I need to think about this.

My Celestron CGEM 800HD Edge has 2032mm focal length, at prime focus I CANNOT capture the complete moon image with my crop T1i camera, if I had a FF I could just capture if fully.

For my crop camera I need to take 2 image and stack them.
You can see it clearly here

neacail wrote in post #16713300
Does anyone have a moon shot to share, that was taken with a full frame camera, and 400 f5.6 L (not the 100-400L) and an EF 2X iii extender?

This is an uncropped image from a 7D (so APS-C) with a 300mm + 1.4xTC + 2xTC for a combined FL of 840mm. As you can see it doesn't come close to filling the frame of a crop sensor.

neacail wrote in post #16713300
I'd like to see the whole, uncropped, image: I'd like to see how much of the frame the moon fills up (which will vary based on the moon's distance to the Earth, of course)

The variation in Earth-Moon distance is negligible.

neacail wrote in post #16713300
I'm mulling over the purchase of the lens, specifically for moon photography. Based on the specs I've read, the lens should retain autofocus and be f11 with the extender.

You'll almost certainly want to use MF for shooting the Moon.

Thank you for the feedback!

Here's one of a couple of images that I've been working on. It isn't my favourite edit (by a long shot), but it's the only edit I have on this computer. It will give you an approximate idea of where I'm at.

neacail wrote in post #16716063
Hubby wants a telescope, and I intend to purchase one for him for Father's Day. I don't feel as if I can give him a telescope and then commandeer it for my own purposes; it wouldn't be much of a gift if I did that.

Just explain to him that there's no point getting the 'scope out when that big, bright Moon is ruining the night sky for looking at anything else. Then you can borrow it.

hollis_f wrote in post #16716179
Just explain to him that there's no point getting the 'scope out when that big, bright Moon is ruining the night sky for looking at anything else. Then you can borrow it.

I hadn't thought of that.

We live in a very heavily light polluted area. He's only really going to be able to get a lot of use out of his telescope when we're camping, and we really only camp three months of the year (July, August, & September).

I've entertained the idea of picking up the small one first "for the family" and then picking up a larger one for him if he decides he'd like a larger one and would use it.

The Nexstar 8SE is the perfect size for the moon on a full frame sensor. It's also a very versatile scope for visual use. However, the mount limits its use to the moon and planets for photography so hubby doesn't need to be too concerned. He'll probably ask if you can get a shot through the telescope anyway.
Instead of the 5SE, I'd put that money towards a Skytracker or Astrotrac so you can use your existing lenses for galaxies and things while you're out camping.

Steve.

neacail wrote in post #16716063
T...

What is frustrating me is that these little shots of the moon just aren't printable at any decent size. I did have my favourite edit professionally printed, and the moon looked amazing, but it is just way too small. I'd like my moon shots to be nicely printable at 8x10 at the smallest.
...

How are you outputing your images after processing? At 400mm with the 70D, you should be able to print 8x10, at a minimum, even with reasonable cropping involved; unless you're downsizing the image that you're printing somehow.

SteveInNZ wrote in post #16716719
The Nexstar 8SE is the perfect size for the moon on a full frame sensor. It's also a very versatile scope for visual use. However, the mount limits its use to the moon and planets for photography so hubby doesn't need to be too concerned. He'll probably ask if you can get a shot through the telescope anyway.
Instead of the 5SE, I'd put that money towards a Skytracker or Astrotrac so you can use your existing lenses for galaxies and things while you're out camping.

Steve.

I do really like that idea. I started looking at tracking mounts and I got really confused. I have access to the AstroTrac TT320X-AG (relatively) locally. The same place that sells the AstroTrac also sells the iOptron Skytracker and the iOptron SkyGuider.

To add to my confusion the shop sells the following package (which is supposed to have "everything required"):

• 1 x NEW AstroTrac TT320X-AG
  
• 1 x AstroTrac Polar Scope
  
• 1 x Manfrotto 055XPROB Tripod (I have a suitable tripod: an old Heiwa)
  
• 1 x Manfrotto 496 RC2 Ball Head (I have a 494 RC2 Mini Ball Head and a 498 RC4 Midi Ball Head)
  
• 1 x Manfrotto 410 Junior Geared Head (I already have)
  

Snydremark wrote in post #16716773
How are you outputing your images after processing? At 400mm with the 70D, you should be able to print 8x10, at a minimum, even with reasonable cropping involved; unless you're downsizing the image that you're printing somehow.

I never print at 100%. I always scale down at least a little bit. I don't remember what I scaled my moon images down by.

neacail wrote in post #16716965
I don't know why they don't include a wedge. I thought those were required. And, I don't think any of this stuff is computerized.

The 410 is used to get the setup at the correct angle, doing the job of a wedge.

hollis_f wrote in post #16717101
The 410 is used to get the setup at the correct angle, doing the job of a wedge.

Thank you!

I've now downloaded the instruction manual so I don't ask any more silly questions.