1208 replies to this topic

[Borodog]

1985 C8 last night.

 

[norvegicus]

Very cool.  I can feel the solar heat.

 

What do you think is the nature of the blue glow on the dark side; is it an optical/photographic artifact like glare or from processing, or is it something real?

[deSitter]

Very cool.  I can feel the solar heat.

 

What do you think is the nature of the blue glow on the dark side; is it an optical/photographic artifact like glare or from processing, or is it something real?

I suspect that is a ghost reflection from the back side of the corrector plate. Such ghosts are very useful for precise collimation in a Schmidt-Newtonian.

 

-drl

[Borodog]

Very cool.  I can feel the solar heat.

 

What do you think is the nature of the blue glow on the dark side; is it an optical/photographic artifact like glare or from processing, or is it something real?

It's definitely an internal reflection of the optics. I like the effect though.

[jgraham]

Gorgeous picture! Sometimes these effects add a lot of character to an image. Wonderful!

[norvegicus]

It's definitely an internal reflection of the optics. I like the effect though.

Me too.  It looks like a shock wave.

[Borodog]

Gorgeous picture! Sometimes these effects add a lot of character to an image. Wonderful!

 

 

Me too.  It looks like a shock wave.

 

Thank you both kindly.

 

The next night. Again, click for Astrobin.

 

[highfnum]

comet catcher

part of veil nebula

[highfnum]

haze to the south so had to stay north

comet catcher 

M13 m57

 

[deSitter]

haze to the south so had to stay north

comet catcher 

M13 m57

Capture 2022-06-07T03_07_05pscc.jpg

 

Capture 2022-06-07T03_30_24ccs.jpg

VERY nice!!!

 

-drl

[deSitter]

haze to the south so had to stay north

comet catcher 

M13 m57

Capture 2022-06-07T03_07_05pscc.jpg

 

Capture 2022-06-07T03_30_24ccs.jpg

How is the CC for visual? I had a Meade SN10 for a while - I tended to think of it as a coma-reduced imaging scope, but it was never in stable thermal equilibrium long enough to evaluate visually. I became frustrated by it.

 

-drl

[highfnum]

It works decent 

It's not a super planetary 

But its fast at 3.6

Sn10 is big and that mass

Takes time

This is 5.5 and cools pretty fast 

[Borodog]

'85 C8. Clicky clicky for Astrobin.

 

[Dave Trott]

I swear Borodog!! The beautiful pair of Messier A and Messier B craters look nearly as good in your Astrobin image as an Apollo photograph. I hope you don't mind if I took a screenshot.

 

 

here is a shot from Apollo 11:

 

 

[Sky King]

Tasco 9VR - made by Vixen

60mm, F5, 300mm fl. - Asi533MC Pro - Optolong L'Extreme filter

 

 

M16 - One three minute exposure:

 

 

 

Edited by Sky King, 08 June 2022 - 04:51 PM.

[Sky King]

Tasco 9VR - made by Vixen

60mm, F5, 300mm fl. - Asi533MC Pro - Optolong L'Extreme filter

 

 

NGC7000 - 13 three minute exposures:

 

 

 

[jgraham]

Full Moon – 12:20am 6/15/2022 EDT
Telescope: Unitron 128 2.4” f/15 Refractor
Camera: ZWO ASI 294MC
Filter: GSO IR Cut Filter
Exposure: 256x0.008sec, Gain 200, saved as PNG
Seeing: Good, 4/5
White Balance: Nebulosity Automatic
Software: SharpCap Pro, AutoStakkert, Registax, Nebulosity, Photoshop

 

 

The Strawberry Moon about 20 hours past full showing a slender terminator along the eastern limb.

[jgraham]

My Unitron 128 configured for imaging using an uncooled ZWO ASI294MC camera...

 

 

This camera offers a relatively large type 4/3" color sensor and is very lightweight without a shutter to shake the scope when it takes an image. If I can add a clock drive I'd like to try some basic deepsky imaging with this telescope. Should be fun!

 

[norvegicus]

My Unitron 128 configured for imaging using an uncooled ZWO ASI294MC camera...

 

Unitron 128 (6-15-2022)-1a.jpg

 

This camera offers a relatively large type 4/3" color sensor and is very lightweight without a shutter to shake the scope when it takes an image. If I can add a clock drive I'd like to try some basic deepsky imaging with this telescope. Should be fun!

It will work fine for that.  I did a little bit of DSO EAA work with a Mayflower (SYW) 814 60/700 and my ASI294MC with nice results.  I should have kept that scope, I miss it.

 

I would recommend not letting the cable hang from the end of the scope like that when using a drive, as it doesn't take much to mess up the tracking; attach it along the OTA down to the mount for strain relief.

Edited by norvegicus, 15 June 2022 - 06:24 AM.

[jgraham]

Good point on the cable. For this little quickie I just wanted to be sure that it would reach the computer. This was my first test with the 128 and I had a fair amount of testing to do and it worked great! I could easily reach the focus, my Bahtinov mask worked fine, pointing was easy, the manual slow motion controls were smooth and effective, the field of view was excellent and the camera was a good match for the focal length. T'was a fun evening!

[LukaszLu]

My Unitron 128 configured for imaging using an uncooled ZWO ASI294MC camera...

 

Unitron 128 (6-15-2022)-1a.jpg

 

This camera offers a relatively large type 4/3" color sensor and is very lightweight without a shutter to shake the scope when it takes an image. If I can add a clock drive I'd like to try some basic deepsky imaging with this telescope. Should be fun!

Good luck! Ive tried similar setup (with ZWO ASI 178MC, 2,4 pixel size) with my 114 model and got quite decent results, despite partly broken lens:

 

Edited by LukaszLu, 15 June 2022 - 08:43 AM.

[deSitter]

Good luck! Ive tried similar setup (with ZWO ASI 178MC, 2,4 pixel size) with my 114 model and got quite decent results, despite partly broken lens:

 

GREAT image!!

 

-drl

[LukaszLu]

Thanks a lot! To be quite honest however I have to show 2 more pictures taken the same evening with Carton T-620 (60/910 mm) and Towa 6305-N (60/900 mm). Now you can compare results:

 

CARTON:

 

 

 

TOWA:

 

[deSitter]

Thanks a lot! To be quite honest however I have to show 2 more pictures taken the same evening with Carton T-620 (60/910 mm) and Towa 6305-N (60/900 mm). Now you can compare results:

 

CARTON:

 

 

 

TOWA:

 

Three queens! Great!

 

-drl

[Borodog]

Lukasz,

 

Those are all wonderful shots.

 

This is the 1985 C8 again, Sony a6000, through the clouds at only 7 degrees of elevation. Only 5 frames stacked but I still like how it came out. My apologies if it makes you feel like your glasses are fogged up, though.

 

 

Edited by Borodog, 16 June 2022 - 06:19 PM.