Our Beautiful Universe - Photos and Videos

[davenn]

On image nr.0007G2 is possible to see crater with middle peak (I suppose ) on right border of siluette in dark area

yup good imaging there ... good to see the improvements you are making

Yes, I can see several craters that have central peaks Dave

 

[DennisN]

A very nice timelapse video of the total solar eclipse in Argentina on July 2 2019:

 

[bruha]

Hi I attach just for interest my last attempt of Jupiter and Saturn by compact SONY automat (not suficient -there is recognizable just Jupiter moons but Saturn )

 

[bruha]

And rest...

 

[Andy Resnick]

Skies cleared up for a few days, giving a moonless night and views of the Veil nebula, which just barely fits within a 400mm lens field of view:

Some crops of the various parts:

400/2.8 lens, 13-second exposures @ ISO 1250.

 

[bruha]

Hi, it is absolutely amazing.. (you can get place without light pollution?)

 

[Andy Resnick]

Hi, it is absolutely amazing.. (you can get place without light pollution?)

Thanks! No, light pollution is very much present- unaided, I can only see stars down to about magnitude 4.

 

[bruha]

Aha, it is similar like here in Prague (little beter in countryside) . Which parameters has your telescope...?

thank you

 

[metastable]

Thanks! No, light pollution is very much present- unaided, I can only see stars down to about magnitude 4.

If I had to guess I'd say you achieved this result with some artfully chosen RAW->JPG conversion settings.

 

[Andy Resnick]

If I had to guess I'd say you achieved this result with some artfully chosen RAW->JPG conversion settings.

There was not a single RAW -> jpg conversion, but it implicitly occurred via 300+ RAW -> stacked TIFF -> jpg.

 

[Andy Resnick]

Aha, it is similar like here in Prague (little beter in countryside) . Which parameters has your telescope...?

thank you

The 'telescope' is a 400/2.8 lens:

https://www.mir.com.my/rb/photography/companies/nikon/nikkoresources/telephotos/400mm.htm

 

[metastable]

Did you use a motorized tripod to track the object?

 

[metastable]

@Andy Resnick & were the TIFF's 8 bit per channel (24 bit)? I ask because if the TIFFs were 8 bit per channel you potentially lost a lot of sensor data in the RAW->TIFF conversion. Would you ever consider sharing one of the RAW files so I could take a look at it with my image conversion software? A lot of Camera RAW files are 14bit or 16bit per channel.

 

[Andy Resnick]

Another field of view: North American Nebula. Same lens, same settings...

 

[Andy Resnick]

Did you use a motorized tripod to track the object?

Yes- a Losmandy G8.

 

[Andy Resnick]

@Andy Resnick & were the TIFF's 8 bit per channel (24 bit)? I ask because if the TIFFs were 8 bit per channel you potentially lost a lot of sensor data in the RAW->TIFF conversion. Would you ever consider sharing one of the RAW files so I could take a look at it with my image conversion software? A lot of Camera RAW files are 14bit or 16bit per channel.

Well... I ran a thread about this a while ago (https://www.physicsforums.com/threa...ss-image-stacking-and-post-processing.963947/). I'm happy to send you a RAW image to play with- PM me with details.

The 14-bit RAWs are most likely converted into a 16-bit/channel TIFF before stacking. The stacked TIFF has a 32-bits/channel format, but in reality there's about 23-bits/channel of information. The magic happens when compressing to a 16-bit/channel TIF for non-Deep Sky Stacker post processing, for example denoising. The final step is another compression to 8-bit/channel which I save as a jpg because filesize.

 

[bruha]

Thank you... can I ask yet. which method of photographing you use: Camera Body atached by bajonet to eyepiece or another ?
thanks and lot of succes

 

[davenn]

Thank you... can I ask yet. which method of photographing you use: Camera Body atached by bajonet to eyepiece or another ?
thanks and lot of succes

It's a Nikon camera and a Nikon 400mm telephoto lens

Nikkor Manual Focus 400mm Super-Telephoto Lensescheers
Dave

 

[metastable]

I took these this morning about 2:35a Pacific Time, along I-5 somewhere between Red Bluff and Corning, California, USA. A 14-24mm Nikon Lens @ 14mm was used with 2.8f, 10sec, 2000iso, all single frame RAW captures on nikon D800 body with approximately the following Adobe Lightroom RAW->JPG conversion settings:

Temp: 4637k
Tint: +2
Exposure: -0.97
Contrast: +87
Highlights: -100
Shadows: +100
Whites: +73
Blacks: +100
Clarity: +22
Dehaze: -1
Vibrance: -61
Saturation: -40

It was a moonless sky looking towards the southwest.

 

[metastable]

HD link: https://i.ibb.co/jknVD8v/IMG-4165.jpg

meteor entry:

HD Link: https://i.ibb.co/LxrM2Hg/IMG-4174.jpg

HD Link: https://i.ibb.co/RQ5SVvY/IMG-4179.jpg

brighter streak-> meteor & dimmer streak-> satellite

HD Link: https://i.ibb.co/HnzQx5F/IMG-4186.jpg

HD Link: https://i.ibb.co/tQV5DCw/IMG-4188.jpg

 

[metastable]

andromeda galaxy:

HD Link: https://i.ibb.co/4Rsm6qD/IMG-4194.jpg

 

[bruha]

Hi Dave and thank you for answer. How much cost approx. this Nikon 400mm telephoto lens?

Hi

 

[pinball1970]

View attachment 247444

HD link: https://i.ibb.co/jknVD8v/IMG-4165.jpg

meteor entry:

View attachment 247445

HD Link: https://i.ibb.co/LxrM2Hg/IMG-4174.jpg

View attachment 247446

HD Link: https://i.ibb.co/RQ5SVvY/IMG-4179.jpg

brighter streak-> meteor & dimmer streak-> satellite
View attachment 247447

HD Link: https://i.ibb.co/HnzQx5F/IMG-4186.jpg

View attachment 247448

HD Link: https://i.ibb.co/tQV5DCw/IMG-4188.jpg

Meteors images 2 and 4? Edit: oops yes you note it yourself.
Great images

 

[davenn]

Hi Dave and thank you for answer. How much cost approx. this Nikon 400mm telephoto lens?

Hi Bruha

not sure offhand, I'm a Canon user
Do a google search of/visit camera shops in your area

 

[metastable]

Meteors images 2 and 4? Edit: oops yes you note it yourself.
Great images

Thank you. In #2 I was looking up at the sky during the 10sec exposure so I saw it with my own eyes... quite bright and the light was bluish in color to my eye. Earlier on I had been driving and right through the windshield I saw a bright blue streak, then the whole sky lit up and afterwards there was a reddish streak across the sky... pretty impressive but I didn’t catch that one on film. I think there’s also at least one satellite in image #5 and a very faint satellite in image #3.

edit:

in image #3.

image #5

 

[Andy Resnick]

Hi Dave and thank you for answer. How much cost approx. this Nikon 400mm telephoto lens?

Hi

I got mine used for about $2500 US.

 

[bruha]

HI and thank you. (it is not my level )

 

[Andy Resnick]

Latest panorama using my 105mm lens, of the constellation Cygnus:

Each exposure was 30 s, ISO 200 @ f/2- that's about the maximum aperture I am still able to get reasonable flat correction- and each stack (there are 6) is about 1 hour total integration time. Color balancing is still uneven, but significant improvement compared to last year. Assuming you are viewing this at a comfortable distance, I could print this image 12 feet across and, at a comfortable viewing distance, you would see this level of detail at the little dark blob just to the left of the North American Nebula:

 

[bruha]

Hi it is really amazing, (how you can get this star density and these collors?) .

I attach sample of movie record of clouds passing over the sun... ó I see it is not allowed attach mp4...

 

[bruha]

Hi,
I attach my last attempt of Jupiter with Bresser HD (web) camera
I did not manage to capture Saturn by this camera up to now.


Lot of succes

 

[Andy Resnick]

Star trails using my 15mm lens:

and a close-up of Polaris, located 0.736 degrees off Earth's rotation axis:

The diagonal line was created by a passing plane.

 

[Andy Resnick]

Hi it is really amazing, (how you can get this star density and these collors?)

Thanks, but all credit for the colorful stars goes to the image's subject :)

 

[bruha]

Hi I attach my last atempt of Saturn with compact camera and 8 mm Hyperion

 

[DennisN]

Star trails using my 15mm lens

I haven't tried taking such a photo, but I will!

Edit: By the way, @Andy Resnick, how did you do it? Is it a composite of multiple long exposure photos, perhaps?

 

[Andy Resnick]

Latest panorama of Cygnus, taken @ 105/2, each frame @ 30s and ISO 250, total expsoure time per stack is about 1.5 hours: lots of interesting open clusters and nebulae are present...