Pleiades or Seven Sisters

Started tonight 50 minutes total
Will add more
Never thought it would be a nebula?

IMAGE LINK: https://flic.kr/p/q4Po​bj

Nice work! I love when people are able to capture the dust (nebula?)

Thanks. Only just realized there was dust recently.

Looking at APOD and doing a search on "seven sisters" there have been quite a few showing lots of dust, I get APOD my iPhone daily since 2011, example.

M45: The Pleiades Star Cluster
Credit & Copyright: Roberto Colombari
Astronomy Picture of the Day
2013 September 18
http://apod.nasa.gov/a​pod/ap130918.html

It's a nice shot, but I would have expected way more nebulosity than that with 50 mins' exposure. Here's what I got using a 600L at f/4 on 5DII at 6400 ISO in about 7 minutes.

Desertraptor wrote in post #17322260
Started tonight 50 minutes total
Will add more
Never thought it would be a nebula?

IMAGE LINK: https://flic.kr/p/q4Po​bj Pleiades or Seven Sisters by Peter Ede, on Flickr

Nice start Peter .

I'm not using a lens. I'm using a Skywatcher ED80 f7.5 refractor with 1.4 tele so probably f8-f10 hence no elements for diffraction spikes and lack of dust.
Sorry for the miss info. But this site does not allow telescopes as equipment. Probably wont bother filling in those details in future.

The pleiades is a type of reflection nebula. The molecular clouds are illuminated by surrounding star light as opposed to ionized glowing gasses generated by Ha regions, such as the Orion Nebula.

Hence what looks like near straight lines in the dust. Like sunlight passing through water?

Desertraptor wrote in post #17323874
I'm not using a lens. I'm using a Skywatcher ED80 f7.5 refractor with 1.4 tele so probably f8-f10 hence no elements for diffraction spikes and lack of dust.
Sorry for the miss info. But this site does not allow telescopes as equipment. Probably wont bother filling in those details in future.

Ah, that explains it! Sorry about that - it said 600L originally. I wondered why you would choose f8 when you had f/4 available!

Been thinking of buying a focal reducer/flattener. reduce focal length but give me few extra f stops.
I could also remove the 1.4 tele and get it back to f7 but it increases vignetting. Still be worth a look see what extra I can get in the same time

Awesome!

Out with the 100-400@f4.5 Let's see what I can get

Desertraptor wrote in post #17327909
Out with the 100-400@f4.5 Let's see what I can get

Q Peter;
Almost since update of the POTN system, your avatar is also changed and if the image is and was you, you look 15-20 years younger! So what happened and did you get upgrade as well! or is this the effect of developing interest over astro stuff on human body ?
Keep up the good work.

VERY nice work Peter, you're off to a great start on this one.

I would suggest giving it a go without the 1.4 TC. The added speed will help but the wider field view will allow more of the nebulosity to be visible in your final image and frame it nicely with the darker regions surrounding it. The flattener is a great idea, every little bit helps. How long are your sub exposures now?