Thanks Jim, I took 200 frames, mostly because it makes a large file and my computer is a little slow. Used 80% of the frames to stack. It is only about a 5 second capture. I use my computer with Sharpcap to capture, I can adjust the gain, exposure and focusing on the computer screen so I can get perfect focus and exposure. I might do a little post processing in photoshop or the Canon dpp software.
I used the fsq106 with the extender. Camera- Asi 1600mm
Thanks Ben
Thank you Alan
Thanks Jim, I added a better resolution link to the original post.
Wow, that link is even better! Incredible crater detail.
Wow - the level of detail in the new link is almost frightening.
Alan, it is a 4" (106mm) refracting telescope with a focal length of 800mm. I'm using a mono astro camera (ASI 1600mm) with the sensor size a little smaller than a standard dslr. I do have a color astro camera that takes good shots but the sensor is real small and i can't fit the whole disk of the moon in the shot. I use my Canon 70-200 with 1.4 extender on the moon but I don't get the detail of the 4" telescope. I am also tracking, this is important. When I'm taking the video I mess with the gain, which is like ISO, and exposure until I like the way it looks on the computer screen so I really don't keep track of what I shoot the video at. It is important to use video on capturing the moon and the planets because of all the turbulence in the atmosphere. When I focus I use the computer screen zoomed up so this way I get real good focus. You should be able to get a sharp pic of the moon with your 100-400 using tracking. Any little movement at 400 mm will degrade the fine detail so tracking really helps.