I was fooling around with the Toupcam from a red/white LP zone and trying to get Comet 41P to show up. I ended up using SharpCap and doing live stacking with between 10 to 23 x 8 sec exposures for each stack. Then, I combined those stacks in IRIS and aligned them on the comet. It came out to be a total of 18 minutes worth of exposure, albeit in a heavy LP zone. So, I got it to show up, but the color and faint details of the tail and coma got lost in the noise.
Here’s one of those images I’ve been playing with over the last few weeks. It combines a number of shots into one image and I try really hard to minimize the blending errors. Doh! 🙂
I have two versions of it. The 2nd version below has better resolution, but is cropped tighter and is not quite the field of view I was hoping to encompass like in the 1st one above.
I took the very good Feb 2017 version of M45 and combined it with 3 other good images taken with the same scope as far back as 2011. I still have more that I can add to it, but for now this will do.
Not satisfied with the first version above, I worked up a darker version with more contrast and noise reduction.
It was Friday, March 3, 2017 and the weather was iffy for imaging at my dark sky location. So, I decided to stay in town and try some short-exposure imaging with the Toupcam color planetary/guider cam I have.
I also wanted to try out an adapter I purchased for the Orion Star Shoot so that it can work with the Orion Ultra-Mini, 130mm, F/4.3 guider scope I’ve been using. This worked better with PHD2 than I thought it would. It seemed more accurate than the Toupcam with less dropped frames. In fact, I’ll probably leave this as the permanent guider setup.
For the Toupcam, I used a two inch extension on the TV-85 at F/7, but I still had to let the cam and extension hang halfway out the focuser to even reach focus. But, it was stable enough to try some simple targets like the Orion Nebula.
I used a software program called SharpCap for acquisition, dark subtraction and stacking. It worked well enough for M42, but it had trouble with stacking dimmer objects like M46, an open cluster with plenty of stars in it. I used IRIS to stack the individual frames manually for that one.
The last two images were tests of a relatively dim galaxies, like NGC 4565 and M64. I only got 16 frames for NGC 4565, so it is not too special. But, it shows the galaxy well enough to recognize what it is. Like the previous image, it was also stacked manually in IRIS.
For my M64 dim galaxy test, I accumulated 38 frames @ 8 sec each. It was also a test of using a video file format called .SER that was designed for astronomical imaging. It is like a video file. After I downloaded a SER viewer/player, which also let me export the frames out as TIF format, I was able to bring the data into IRIS and stack.
I really didn’t have time to shoot this like it should. But, I just had to get a minimum of 3 shots of it since I could see it with my naked eye. It was calling me. lol