Our Beautiful Universe - Photos and Videos

[chemisttree]

Here's the 'Leo Triplet', 1 hour integration time @Iso 1250, slightly downsampled:

View attachment 259406

What telescope/lens is that camera seeing this through?

This one?

 

[Andy Resnick]

What telescope/lens is that camera seeing this through?

This one?

Yes, sort of- a 30-year old manual focus version of that lens. It's amazing!

 

[Andy Resnick]

Next, finished processing the Rosette nebula, 78 m integration @ISO1250: cropped and downsampled 33%

Still a bit faint, but the color rendering is fantastic.

 

[davenn]

Comet Lovejoy from a few years back
2015-01-14

Image data

 

[davenn]

Next, finished processing the Rosette nebula, 78 m integration @ISO1250: cropped and downsampled 33%

View attachment 259455

Still a bit faint, but the color rendering is fantastic.

Good image, but so faint for 78 minutes. I still can't figure out why your long exp. images are all quite faint.
At that length of exposure time, regardless of if it's a bunch of stacked images or a single image should be blasting off the screen

here's 21.5 minutes made up of 30 sec exposures 44 lights, 9 darks

 

[bruha]

Hello, it is very interesting. Please what is for example apparent magnitude and arc size of this nebula
Thanks

 

[Andy Resnick]

Preliminary M51 stack, 58m integration time; there are about 10 NGC objects in the full field of view:

Again, the hue/chromatic problems I used to have with DSS are largely resolved in APP (not an endorsement). What is odd, there remains a large-scale blue-red gradient (red in the center, blue at the edge) in the flat-corrected stack, indicating a real phenomena and not an algorithm quirk. I suspect it's because I'm using a LCD (monitor) for the flats; the LCD display color temperature is not the same as the night sky.

 

[Andy Resnick]

Good image, but so faint for 78 minutes. I still can't figure out why your long exp. images are all quite faint.
At that length of exposure time, regardless of if it's a bunch of stacked images or a single image should be blasting off the screen

here's 21.5 minutes made up of 30 sec exposures 44 lights, 9 darks

Yeah, I know. I'm going to plead a combination of 'ignorance' and 'non-optimized' b/c I'm using a new stacking program.

 

[davenn]

Yeah, I know. I'm going to plead a combination of 'ignorance' and 'non-optimized' b/c I'm using a new stacking program.

OK My processing skills need to be improved as well. Wish I could process images the way
others do

Ohhh just had the other thought ... are you still only doing just 1 sec exposures ?

 

[Andy Resnick]

Ohhh just had the other thought ... are you still only doing just 1 sec exposures ?

Heh... nope, I've progressed all the way to 8 second exposures :) Well, depending on the declination- I can go up to 15 seconds for M51/M101 and still get a reasonable fraction of stackable images.

 

[bruha]

Hi, these two moons I think is not bad

 

[davenn]

Hello, it is very interesting. Please what is for example apparent magnitude and arc size of this nebula
Thanks

M9.0 is the apparent magnitude

https://en.wikipedia.org/wiki/Rosette_Nebula

 

[bruha]

Thank you...

 

[bruha]

Thank you

 

[bruha]

Hello,
I attached still one moon image -moore saturated

 

[chemisttree]

Hello,
I attached still one moon image -moore saturated

Better and better. Single image?

 

[chemisttree]

Hi, these two moons I think is not bad

Theophilus is striking. Focus is very good. These are afocal images? Plossl 12mm?

 

[chemisttree]

Yeah, I know. I'm going to plead a combination of 'ignorance' and 'non-optimized' b/c I'm using a new stacking program.

How long were your subs?Edit:
Nevermind. 8 sec. I see.

 

[chemisttree]

Heh... nope, I've progressed all the way to 8 second exposures :) Well, depending on the declination- I can go up to 15 seconds for M51/M101 and still get a reasonable fraction of stackable images.

Your images are not tracked?

 

[chemisttree]

What is odd, there remains a large-scale blue-red gradient (red in the center, blue at the edge) in the flat-corrected stack, indicating a real phenomena and not an algorithm quirk. I suspect it's because I'm using a LCD (monitor) for the flats; the LCD display color temperature is not the same as the night sky.

You are setting your LCD to white and taking your lights that way? What would happen if you imported that flat into Adobe and removed the color info?

 

[Andy Resnick]

Your images are not tracked?

I don't know what you mean by 'tracked'?

 

[Andy Resnick]

You are setting your LCD to white and taking your lights that way? What would happen if you imported that flat into Adobe and removed the color info?

I made some progress- the white balance of my flat source (the LCD) is not the same as the (streelight polluted) night sky- I took another set of flats 'red shifting' the color and that reduced the problem significantly.

 

[bruha]

Thank you,
yes its single image ( I have not possibility with my sony compact to make automatic sequence..)

:)

 

[bruha]

 

[davenn]

I don't know what you mean by 'tracked'?

That means the telescope is tracking the stars/object

 

[Andy Resnick]

Your images are not tracked?

That means the telescope is tracking the stars/object

Oh... I assumed it was obvious- there's no way to acquire an 8-second exposure without it (well, except for Polaris...). I don't have an auto-guider.

 

[bruha]

Hello, I send two older images Jupiter with some months (little fuzzy)

 

[Andy Resnick]

ISS flyover, 4/2/20 9:15pm. 1/1600s 800/5.6 ISO1250:

Definitely best images yet.
Edit: I figured out how to post the 'video':

 

[davenn]

ISS flyover, 4/2/20 9:15pm. 1/1600s 800/5.6 ISO1250:

Definitely best images yet.
Edit: I figured out how to post the 'video':

Sweet

 

[davenn]

Venus and M45 the Pleiades Cluster
04 Apr. 2020. 0830UT (1930 AEDT)
Canon 6D 40th sec, 100mm, ISO2400
From Sydney, Australia