Saturday, October 1, 2016

October 2016

October 22nd 2230 GMT

I went out again with my DSLR. I set the camera at 2.5 seconds exposure, 300mm focal length and ISO 6400.

My targets were:

The Pleaides (M45), Hyades , polar region, Orion's Belt and southern Lyra, hoping for the Ring (M57).

The Pleaides shot was composed of 49 light and 17 dark frames.




October 22nd 2150 GMT

I set another star trail exposure going, this time aimed eastwards.


October 20th 2000 GMT

I aimed a long bulb exposure at Perseus at 18mm focal length and ISO 400. I hoped to catch some Orionid meteors on film.

October 17th 0530 GMT

I took a few frames of the Moon with my DSLR at 300mm, ISO 400 and 1/4000 second exposure.

October 16th 1425 GMT

As the previous day, the Sun was quiet in hydrogen alpha light, apart from a small prominence. I took some full disc shots and miscellaneous close-ups.

October 16th 1030 GMT

The trouble with looking at Big Bear images is that you can know that sunspots are there but you just can't see them. I would have stood a better chance of seeing them in my Maksutov but there was too much moving cloud to get a good shot. My bin scan resulted in a big fat ZERO!

October 15th 2215 GMT

The sky was cloudless but the Moon was pretty much full and bright. There really was only one thing to do and that was to snap the Moon. Being a Saturday, I took 166 full disc frames with my Mak and DSLR at ISO400 and 1/4000 second exposure. I applied the usual treatment to get this, which I was rather pleased with.
I then used a 3X Barlow lens, initially with an exposure of 1/1000 second and later with 1/400 second exposure. I did not use a driven mount, so I hoped the stitching and stacking would produce wide panoramas.

The first sets of images were too grainy and under-exposed.

I stacked 26 frames to get the first close-up.

I extracted two close-ups from the next stack, of 50 frames.

The next images were composed from a stack of 46 frames.

The next photo was from 144 frames.

I stacked 72 images to obtain this image:

The next two images came from 42 frames:

The next image showed a bit more of Tycho.

The next image was composed of 144 frames.
The final 11 frames featured Grimaldi.
I ended up with 653 frames altogether.

I stacked two large areas of the Moon from previous stacks but was unable to obtain a complete disc.

October 15th 1030 GMT

I checked the Sun in hydrogen alpha light with my PST and it appeared as quiet as it did in white light. I took full disc, quadrant shots and tried a few shots in the centre of the solar disc.


October 15th 0955 GMT

I bin scanned the Sun through cloud but did not see any sunspots, even though one was visible in the Big Bear images.

October 13th 1200 GMT

I bin scanned the Sun through cloud but did not see any sunspots.

October 11th 1205 GMT

I bin scanned the Sun under clear conditions and saw the same sunspots as the day before.

October 10th 1210 GMT

I waited for some clouds to clear then had a clear bin scan of the Sun. I could see  two large sunspots.

October 9th 2045 GMT

I did some shots with my DSLR of the Moon.


October 9th 1230 GMT

It cleared again for a while. I did a solar hydrogen alpha shoot. The Sun seemed quiet, apart from the sunspot regions.

October 9th 0920 GMT

I woke up to bright sunlight and did a rare white light shoot, as there hadn't been many sunspots. I managed a handful of frames before cloud rolled in.

I used my Mak and ISO 400 with 1/4000 th second exposure.

October 6th 2000 GMT

Conditions were not great but far better than forecast. Nevertheless, I settled on the relatively easy target of Melotte 20. I took plenty of frames and darks butmany were affected by cloud.

October 6th 1935 GMT

The Moon was low but I caught it between the cloud. I took shots at 300mm focal length, ISO 800 and 1/1600th second exposure.

October 6th 1225 GMT

The fat old sun is obscured by clouds. Well, that was as sung by Pink Floyd but there were enough breaks in the cloud to catch a look at some sunspots. I saw two of the fainter ones that were visible on the Big Bear images as well as the large one. Rather pleasing, given the conditions.

October 5th 2000 GMT

I repeated the polar star trails, hopefully with a more suitable ISO of 400. I used a focal length of 18mm and the exposure was about 25 minutes.


October 5th 1800 GMT

I took some frames of the Moon at 300mm focal length, ISO 800 and 1/1000 second exposure.

October 5th 1200 GMT

I bin scanned the Sun in a clear sky. I saw the large sunspot that was visible in the Big Bear images but missed some smaller ones.

October 4th 1950 GMT

I figured that it would be one of the last days, if not the last day that I would be out astronomising in shorts. I covered my T-shirt with a light jacket. I had tried to find the Moon earlier but failed, as it was below a bank of cloud or the neighbouring houses.

The sky coming up to 2000 GMT was clear overhead but it was cloudy near the horizon. I decided to shoot straight overhead with my DSLR at 18mm, ISO 800 and 30 seconds exposure. I shot 8 light frames and 24 dark frames but the camera rotated the last 4 light frames, so I could only stack four.

In parallel, I did some bin scanning. I tried to see the Wild Duck Cluster (M11) but it was too cloudy. Albireo showed well. I could also see the other summer double stars and Alcor/Mizar to the north.

I was pleasantly surprised to see M13 showing quite nicely. Although they were low, I could see the Pleiades (M45). Rather too soon, cloud started to encroach on Cygnus to the west. I had a browse through the constellation before packing up for the night.

October 4th 1225 GMT

Despite the presence of sunspots in the Big Bear images, I was unable to see any when I did my bin scan.

October 2nd 2000 GMT

I did a couple of long bulb exposures in the polar regions but appeared to ov er-expose them!
Fortunately, I managed to extract some detail from the second image.

October 2nd 1120 GMT

The Sun was so quiet in hydrogen alpha light that I couldn't see anything at all. I took some full disc and quadrant shots.


October 2nd 2320 GMT

I shot a few frames of the Pleiades (M45) with my DSLR at 300mm focal length, ISO 6400 and 2.5 seconds exposure.

October 1st 2220 GMT

I went out to check the sky. It was mostly clear and I saw a bright sporadic meteor of magnitude -3 flashing south east from Cygnus to near the southern horizon.

I headed inside and set up my camera. I used the wider angle lens at 18mm focal length and 30 seconds exposure. I aimed the camera at Capella.

OK, first mistake. The camera was on ISO 6400 and I hadn't checked it! However, I managed to catch some detail by processing.

I tried again at ISO 800 but found that there was too much haze near the horizon. It looked so similar to the previous effort that I didn't process it.

I aimed higher, at Perseus, and took a few shots and then took some dark frames.