After a period of careful deliberation, I chose to purchase a ZWO ASI 290MC astro-video camera. This camera has a CMOS sensor with 1936 X 1036 pixels 2.9 microns across, and is capable of exposures of up to 2,000 seconds duration, or more than half an hour. It is a one-shot color camera that although it isn't cooled, it can be used on deep sky objects as well as the Sun, Moon and planets for which it's designed. The camera also has a tripod socket and an auto-guider port to allow it's use through software as an auto-guider as well as a camera. In addition to the nosepiece, cap, cables and software, the camera also came with an all sky lens with a field of view of at least 150 degrees.
The software that came with the camera included Sharp Cap, which is an excellent software suite for controlling the camera and capturing video. The camera can also be used to take still images as well. Along with the camera, I purchased an Agena flip mirror to make locating objects and getting them in the camera's field of view easier and a filter wheel that for now will be mainly used for visual observing with the SCT. Recently I also acquired a atmospheric dispersion corrector and an IR-cut filter. The camera does not have one, and infrared radiation will be recorded along with visible light. That can contaminate the color balance of color images, and blur monochromatic images due to infrared light not being focused by the telescope in the same way as visible light.
The flip mirror has T-threads on the rear port, so I screw the camera directly to the rear of the flip mirror. The front nosepiece is inserted into the telescope's visual back or a Barlow lens when more magnification is needed. The eyepiece drawtube has a helical thread for adjustments to enable the eyepiece and camera to reach the same focal plane. I also bought a short extension tube to ensure I will always be able to get the eyepiece and camera in focus at the same time regardless of what eyepiece I use in the flip mirror. It takes a 6mm eyepiece to approximate the field of view the camera sees through the telescope. I use my laptop to capture the video and still images then transfer them to my more powerful desktop for processing.
This shot of the craters Cyrillus, Theophilus and Catharina was one of the best astronomical images I have ever taken. In addition to the flip mirror and camera, I used a 2X TeleVue Barlow lens to achieve the needed magnification to frame the scene. Note the numerous small craters and the shallow troughs in the area.
This flooded crater is surrounded by rugged terrain saturated with other impact craters. Except from the two other craters that overlap it, the crater's floor is relatively flat and dotted with tiny craters. The central peak is the oblong mound in the center.
Although my main interest is imaging the moon and planets, I found this camera is a capable imager of double and multiple stars. This picture is of Epsilon Canis Majoris, or Adhara during poor seeing. The eight magnitude companion is readily visible.
This feature is known as Grimaldi, which lies along the western limb of the moon. It's best seen just before full moon and when the moon is a thin waning crescent. Like the maria of the Moon, it's a lava flooded impact basin.
This is a wide area photo of Oceanus Procellarum, Grimaldi and the terminator one day before full moon. Like most of the photos, this one was taken at the full 1936 X 1036 pixel resolution.
These craters are also visible in the wide area photo above. Numerous shallow rilles abound, including two straight rilles nearly at right angles in the larger crater, as though they're runways at a major airport.
This image was taken during first quarter moon a week before of the terminator along the southern highlands.
This wide scale image of the southwestern limb includes the craters Wargentin and Schiller. Note that basaltic magma has flooded some craters in the area.
The closer image of Wargentin shows the crater was filled to the brim with lava until it overflowed onto the surrounding landscape. Because of this, it is now a circular mesa or plateau.
This is a close up of the double star Sirius and it's white dwarf companion. I have seen this star visually, but with difficulty under anything less than very good seeing and larger apertures. Through my 8-inch Celestron and this video camera, it appears readily even though the seeing was poor that night.
This image shows the rilles Rimae Hyuginus and Triesnecker. The pits along Rimae Hyuginus are not impact craters, they are volcanic collapse pits. They have no raised rims while the impact craters do. These rilles were formed by volcanism and tectonic forces.
This image shows the Alpine Valley to the left, and a flooded impact crater to the right with two more craters within its rim.