Our Beautiful Universe - Photos and Videos

[davenn]

Hi and thanks.
I used USB HD camera bresser inserted to scope shaft instead of eyepiece.https://www.dalekohledy-puskohledy....g-s69NdTj3AJysw7CspDXuLiOxcIxgSsaAsAPEALw_wcB

looks good

 

[chemisttree]

That *is* a cool region- here's a detailed view of the image I took last night:

That’s fantastic. I hope you can catch it again tonight and follow the dawn along the Rupes Altai. It’s raining here tonight and my cloud filter is still lost in the mail, so I’ll miss the show this month.

 

[Andy Resnick]

Horsehead and Flame nebulae, 3h observing time:

 

[bruha]

Hello, it looks really fantastic..
can I ask what is your "gear" equipment?

 

[chemisttree]

What’s it like using that Bresser USB HD camera?

 

[Andy Resnick]

Hello, it looks really fantastic..
can I ask what is your "gear" equipment?

I assume you are asking me :) My gear is simple- this image was constructed with a 400mm f/2.8 lens and full-frame camera (both Nikon) mounted on a Losmandy GM-8, no autoguider.

 

[bruha]

Hi and thank you for information. .

 

[bruha]

Hello this is bresser HD USB cam. link for chemistree
https://www.dalekohledy-puskohledy...g-s69NdTj3AJysw7CspDXuLiOxcIxgSsaAsAPEALw_wcB

 

[Drakkith]

Horsehead and Flame nebulae, 3h observing time

Very nice! Here's my narrowband image of the same target. I had a ton of problems with this shoot, and my results were not nearly as good as I was hoping.

 

[chemisttree]

Very nice! Here's my narrowband image of the same target. I had a ton of problems with this shoot, and my results were not nearly as good as I was hoping.

This shot taken with an SCT?

 

[Drakkith]

This shot taken with an SCT?

It was taken with a William Optics GT-81 APO.

 

[Andy Resnick]

Veil Nebula, in Cygnus, 4 hours viewing time- whole field of view and some zooms:

This nebula is tricky (for me) because it just barely fits in the field of view at 400mm; precise flat field correction is critical across the entire image. It's easier to see the nebula when I remove the stars from the image and stretch out the leftover bit:

 

[DennisN]

Here's my narrowband image of the same target. I had a ton of problems with this shoot, and my results were not nearly as good as I was hoping.

But it's a very nice photo anyway, I'd say. Nice shades of red.

 

[Drakkith]

I consider this to be my best image. Hope I haven't posted it in this thread already:

Carina Nebula in SII, HA, and OIII narrowband.

 

[DennisN]

I consider this to be my best image.

Very nice!

 

[DennisN]

Jupiter, 24 June 2020, with 2 bands visible.
Camera settings: ISO 200, 1/10 s exposure.

59 stacked photos processed with PIPP, AutoStakkert and finally Adobe Lightroom (where I could remove a lot of the aberration, and also increase contrast and decrease exposure, if I remember correctly).

The planet was just a yellow blob with atmospheric aberration in the telescope , but the postprocessing brought out at least some detail.

 

[chemisttree]

Jupiter, 24 June 2020, with 2 bands visible.
Camera settings: ISO 200, 1/10 s exposure.

59 stacked photos processed with PIPP, AutoStakkert and finally Adobe Lightroom (where I could remove a lot of the aberration, and also increase contrast and decrease exposure, if I remember correctly).

The planet was just a yellow blob with atmospheric aberration in the telescope , but the postprocessing brought out at least some detail.

View attachment 265661

This afocally with your 70mm inexpensive scope and the plossl it came with? And your camera phone/video? That’s impressive!

 

[DennisN]

This afocally with your 70mm inexpensive scope and the plossl it came with? And your camera phone/video? That’s impressive!

Thanks! Yes, a $35 scope and a $132 phone. And a lot of patience...
Now that you asked I don't remember which eyepiece I used.
I have a couple of other cheap eyepieces I bought from China (brand Datyson), and I remember I tried with those too (using a 0.965" to 1.25" eyepiece adapter). But I don't remember which eyepiece I ended up using when I took the photos. I have to start taking notes . And I am considering getting new equipment at the moment too.

If I used one of these eyepieces, it may have been the 10 mm, third from the left in this photo:

 

[bruha]

Hi,
I send 3 moon images by phone camera (Huawei Y 6) with phone eyepiece adapter , sharpened with GIMP. Anyway your postprocessed Jupiter looks nice .. (up to now I reached worse results with Jupiter..

 

[chemisttree]

Hi,
I send 3 moon images by phone camera (Huawei Y 6) with phone eyepiece adapter , sharpened with GIMP. Anyway your postprocessed Jupiter looks nice .. (up to now I reached worse results with Jupiter..

This is a great start! Did you use the 25mm eyepiece? You need a fairly large exit pupil to get best results.

Can you use a timer to take the picture to reduce vibration when you touch the phone to take a pic? I have mine on a 3-second delay so that when I touch the screen to take the picture, the vibrations dampen down before the shutter fires.

I also center the eyepiece over the camera objective by looking through the eyepiece backwards after mounting the camera to the eyepiece. I find the Moon by looking at the diagonal until it is illuminated and then drop the eyepiece/camera assembly into the diagonal. This usually guarantees that the camera is centered over the eyepiece and only minor scope repositioning is required to compose the shot. That color you are getting is due to the camera not being positioned directly over the eyepiece.

The contrast is amazing in your shots! This means you will be taking fabulous pictures in no time when you resolve the minor issues!

 

[chemisttree]

The Moon tonight. Finally, clear skies! C-6 with 0.67 flattener/reducer, afocal with 25mm plossl and the iPhone.

 

[bruha]

Hi and thank you for your advises. My shots are made with |Hyperion eyepiece 8 mm and delay 5 s.
But I have not very good stand and probably due this vibration not dampen within 5 s...
Concerning centering eyepiece: you mean that you look back to eyepiece which is putting out from telescope and camera is switch to backward mode? ( I am probably do not understand properly)

Thank you and have nice days and clear night skies ..

 

[chemisttree]

Bru,

like this...

Look through the eyepiece backwards and center the camera that you see when the cameraphone is mounted to your adapter.

 

[chemisttree]

Horsehead and Flame nebulae, 3h observing time:

View attachment 265494

Was this taken with <1 minute subs?

 

[bruha]

Hi and thank you for explanation, now I understand..

 

[chemisttree]

I’ve found it is very difficult to get high magnification (small exit pupil) shots with the cameraphone. I start really having trouble once the exit pupil gets to <1mm.

How do I choose an eyepiece that will give me 1mm exit pupil and larger?

One way to compute magnification is to divide the objective diameter by the exit pupil. For an 80mm scope with a 1mm exit pupil, that works out to 80x.

One of my 80mm scopes has a 455mm focal length. The common way to determine Magnification is to divide objective focal length by eyepiece focal length. So, to determine the eyepiece focal length that will give me a 1 mm exit pupil,

80 = 455/x; x= 455/80 = 5.6

Another 80mm scope I use has a fl of 1200mm. The eyepiece that will give me a 1mm exit pupil is,

80 = 1200/x; x= 1200/80 = 15

So with one scope, I can use a 5.6mm eyepiece and above (longer) and with the other I can use only 15mm and above.

My C-6 (152mm objective) has a 1525mm focal length. A 1mm exit pupil for that is ~152x. (152mm obj/1mm pupil)

152 = 1525/x; x = 1525/15= ~10
For that scope I can only use 10mm and above eyepieces.

 

[Andy Resnick]

Was this taken with <1 minute subs?

Yeah, with that declination and focal length I think I was taking 10 second individual exposures.

 

[bruha]

Hi, here is two Jupiter images from last night. I use phone camera with Hyp. eyepiece 8 mm. As I understand calculation , with my 600 mm scope f.l. and 120 mm diameter I get 120/(600/8)= 1.6 mm pupil diameter which is to much...

 

[Drakkith]

Yeah, with that declination and focal length I think I was taking 10 second individual exposures.

Eww! Someone get this man a proper tracking mount asap!

 

[Andy Resnick]

Eww! Someone get this man a proper tracking mount asap!

Nah, the mount is fine and operating normally, I would need an autotracker to improve the integration times. That would then introduce a whole slew of electronic equipment that I have to deal with during setup, and I choose to deal with as little as possible :).

Obviously I can acquire longer individual frames by either 1) using a shorter focal length or 2) imaging objects at higher (lower?) declination- closer to Polaris.

I mean, it's really all about being outside, right?