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Small bore challenge: Venus w/ 6" or less

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#101 DMach

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Posted 11 September 2018 - 08:28 AM

Finally have a capture of Venus I feel worth sharing. Finding this to be a tricky target ... the brightness, lack of surface features and generally poorer seeing make it harder to be sure focus is spot on. The lack of features also make processing feel a little like guesswork!

 

Anyway, here it is. Visible light only ... maybe need to think about getting one of those fancy UV filters and doing some mono work.  wink.gif

 

Celestron 6SE, iOptron CEM60, ASI290MC, PowerMate 2.5x, UV-IR filter

Venus 2018-08-16 v2 66pc.png

 

Venus 2018-08-16 v2.png

 

 


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#102 DanBorja

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Posted 27 January 2020 - 08:32 AM

So I gave Venus a shot last night. It's my first time imaging Venus and I'm pretty happy with the result even though it was low, 26 degrees if I recall correctly. Hopefully as it gains altitude towards March I can resolve some detail of its atmosphere, although I'm not sure if I can manage that with 6".

 

This is a stack of 8,000 frames. I tried using the drizzle x3 and then downscale the image, but sharpening on registax brought many artifacts and it just didn't work for me this time.

 

ey7wzig.png


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#103 KiwiRay

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Posted 27 January 2020 - 09:21 AM

So I gave Venus a shot last night. It's my first time imaging Venus and I'm pretty happy with the result even though it was low, 26 degrees if I recall correctly. Hopefully as it gains altitude towards March I can resolve some detail of its atmosphere, although I'm not sure if I can manage that with 6".

 

This is a stack of 8,000 frames. I tried using the drizzle x3 and then downscale the image, but sharpening on registax brought many artifacts and it just didn't work for me this time.

 

 

Hi Dan - Nice, crisp image.  We also have a Venus small-bore thread:

 

https://www.cloudyni...us#entry8826842

 

Ray
 



#104 DanBorja

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Posted 27 January 2020 - 11:47 AM

First try at Venus...

 

6"SCT + TeleVue 2x Barlow + ZWO ASI290mc

 

 

 

ey7wzig.png


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#105 cyberplocos

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Posted 28 January 2020 - 10:38 PM

Hi all,

 

Venus some days ago using an ETX90 Maksutov telescope with ASI 290MM camera. IR(G)UV image, fair to good seeing conditions.

 

regards,

Fabio

Attached Thumbnails

  • xW_09JuZWypS_1824x0_kWXURFLk.jpg

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#106 DanBorja

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Posted 29 January 2020 - 08:22 AM

Hi all,

 

Venus some days ago using an ETX90 Maksutov telescope with ASI 290MM camera. IR(G)UV image, fair to good seeing conditions.

 

regards,

Fabio

That's an amazing image Fabio. I love the colors! Do you have a link of your UV filter?



#107 Stargazer3236

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Posted 09 February 2020 - 09:03 PM

I have to try Venus with my ETX90 soon!



#108 evan9162

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Posted 10 February 2020 - 07:33 PM

Venus season is upon us again.  Time to dust off the VX6L:

 

16_51_33_lapl4_ap17_sharp.jpg

 

OO VX6L, Astrodon UVenus, TV 2x, ASI178mm. ~5000 frames

 

2020-02-10, ~23:56 UTC


Edited by evan9162, 10 February 2020 - 07:34 PM.

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#109 Stargazer3236

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Posted 10 February 2020 - 09:05 PM

Venus season is upon us again.  Time to dust off the VX6L:

 

attachicon.gif16_51_33_lapl4_ap17_sharp.jpg

 

OO VX6L, Astrodon UVenus, TV 2x, ASI178mm. ~5000 frames

 

2020-02-10, ~23:56 UTC

What are the details of your capture? Gain, ROI, image capture software?



#110 evan9162

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Posted 10 February 2020 - 10:36 PM

What are the details of your capture? Gain, ROI, image capture software?

Gain 275, shutter 16ms,  ROI = 800x600 (~60fps), 16-bit capture, in SharpCap



#111 evan9162

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Posted 13 February 2020 - 10:40 PM

Venus this afternoon.  Pretty good seeing for a portion of the capture

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  • Venus_UV_VX6L_2x_sharp (17).jpg

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#112 evan9162

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Posted 14 February 2020 - 09:55 PM

Another today

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#113 Trevor N

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Posted 15 February 2020 - 04:48 PM

Mounted an ED100 on a skytee mount to have a look and then thought I would have a go at an image. You need four hands !. One to focus, one to pan, one to tilt and one to work the laptop. Chasing Venus around the screen manually during the video was interesting ! No prizes for this one but amazed I got anything.

Attached Thumbnails

  • venus-Ed100-skytee-x2-dbarl.jpg

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#114 MalVeauX

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Posted 15 February 2020 - 07:57 PM

Heya,

 

I picked up a Celestron 127mm Mak and decided I would collimate it on Sirius B then point it at Venus and do a RGUV composite to test it out. First Mak I've ever had. I used a mono sensor and a filter wheel (manual) to do a RGUV composite, using a 610nm long pass as ®, 500nm as (G) and 395nm as (near UV, B). I did about 33k frames on R & G, and 12k frames in UV and stacked 33% of that. Aligned in AS!3. Wavelets in R6. Final touches in CS5.1 (PS).

 

49539966503_aa0d3cc358_o.jpg

 

Setup in the obs:

 

Venus_setup_02152020.jpg

 

Collimation prior to imaging on Sirius B:

 

Celestron127mmMak_SiriusB_Collimation_02152020.jpg

 

Location, Date & Time (34 degrees Alt):

 

Venus_LocationDateTime_02152020.jpg

 

Very best,


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#115 sunnyday

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Posted 15 February 2020 - 10:26 PM

I tell you,there are photos here that are beautiful and filled with expertise.



#116 Stargazer3236

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Posted 15 February 2020 - 10:33 PM

Heya,

 

I picked up a Celestron 127mm Mak and decided I would collimate it on Sirius B then point it at Venus and do a RGUV composite to test it out. First Mak I've ever had. I used a mono sensor and a filter wheel (manual) to do a RGUV composite, using a 610nm long pass as ®, 500nm as (G) and 395nm as (near UV, B). I did about 33k frames on R & G, and 12k frames in UV and stacked 33% of that. Aligned in AS!3. Wavelets in R6. Final touches in CS5.1 (PS).

 

49539966503_aa0d3cc358_o.jpg

 

Setup in the obs:

 

attachicon.gifVenus_setup_02152020.jpg

 

Collimation prior to imaging on Sirius B:

 

attachicon.gifCelestron127mmMak_SiriusB_Collimation_02152020.jpg

 

Location, Date & Time (34 degrees Alt):

 

attachicon.gifVenus_LocationDateTime_02152020.jpg

 

Very best,

Firecapture or SharpCap? Gain, exposure?


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#117 MalVeauX

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Posted 16 February 2020 - 08:15 AM

Firecapture or SharpCap? Gain, exposure?

I used FireCapture. Here's the capture settings and limits from the logs. The ASI290MM is a very sensitive camera, very efficient and of course Venus is very bright. Being able to image with no gain and very short exposures is easy with Venus, the challenge is going short wavelength (UV) where the seeing conditions are worse and most of these filters are lower transmission, so you can see down below my 395nm (UV) filter requires very different exposure values from the R & G.

 

Red Filter (Baader 610nm Long Pass):

 

FireCapture v2.6  Settings
------------------------------------
Camera=ZWO ASI290MM
Filter=R
Profile=Venus
Duration=180.030s
Frames captured=33694
FPS (avg.)=187
Shutter=1.876ms
Gain=0 (0%)
Histogramm=49%

 

Green Filter (Baader Green 500nm):

 

FireCapture v2.6  Settings
------------------------------------
Camera=ZWO ASI290MM
Filter=G
Profile=Venus
Duration=208.288s
Frames captured=33689
Shutter=2.362ms
Gain=0 (0%)
Histogramm=38%

 

Blue (UV, Andover 395nm filter, lower transmission significantly, so I had to use long exposure and lots of gain):

 

FireCapture v2.6  Settings
------------------------------------
Camera=ZWO ASI290MM
Filter=UV
Profile=Venus
Duration=180.013s
Frames captured=11169
FPS (avg.)=62
Shutter=16.00ms
Gain=235 (39%)
Histogramm=55%

 

Very best,


Edited by MalVeauX, 16 February 2020 - 08:15 AM.

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#118 eros312

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Posted 23 March 2020 - 09:15 PM

Taken with a Meade 6" ACF

ASI 183MC

Astodon UV filter

1.25X barlow

First time imaging in 2 years, I think you can make out some streaks in the cloud tops. My focus looks off and I think I screwed up the settings somewhere because I see a grid pattern.

 

2020-03-24-0039_2-KD-L-Jup_ZWO ASI183MC Pro_lapl4_ap6.jpg


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#119 Foc

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Posted 23 March 2020 - 10:18 PM

Excellent outcome Ken for imaging with the cobwebs on.  Sure looks like cloud markings.  How high was Venus when you took it and what time of the day was it taken?  No ADC? Then your image does not seem to show much need for an ADC in this instance.


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#120 eros312

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Posted 23 March 2020 - 10:34 PM

8:39 PM and about 34° altitude. I've an ADC but didn't use it. 



#121 xb39

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Posted 25 March 2020 - 04:03 PM

Hi,

here is mine: 

 

Venus_Pi_resampled_web.jpg

 

Skywatcher Esprit 150, Vivitar 3x, ASI174MM-Cool

 

CS

Stefan


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#122 MalVeauX

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Posted 29 March 2020 - 11:22 PM

Heya,

 

Venus tonight in RGB+UV and RGUV composites to show clouds.

 

49714547283_c2bc1416a1_o.jpg

 

150mm F8 Achromatic Doublet (Celestron C6R)

ZWO ASI183MM

ZWO Filter Wheel + Astronomik RGB and Andover 375~395 UV filter

Best 60% Frames of 5k per channel

Natural color RGB + UV and RGUV composites

 

Lunar_Venus_Setup_03292020.jpg

 

Very best,


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#123 Toddeo

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Posted 30 March 2020 - 10:06 AM

Not much, but I had to shoot a couple of Venus. Was out with the AT72EDII and ZWOASI178MM shooting the Moon- before finishing, took a few captures of Venus.

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  • AT72ED-#4_opt.jpg
  • AT72ED-#5 (1).jpg

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#124 gfeulner

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Posted 01 April 2020 - 09:30 PM

Ven_202054_g4_ap13.jpg

This is my first image of Venus in years. Taken with a Celestron 80mm Fluorite, ZWO 290MC and ES 3x extender. Best 40 percent of about 20 thousand frames. Just wish I had a filter to bring out the cloud structure.

Gerry


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#125 james7ca

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Posted 01 April 2020 - 10:23 PM

Gerry, that's a good shot from an 80mm scope.




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