Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

Russe

Imaging with the 130pds

Recommended Posts

2 hours ago, astrosathya said:

How many hours is this? I too live in Bortle 8 skies, I have both the Baader 7/8.5 Ha-O3 filters.

It was  Ha / SII x 33, OIII x only 13 (around 40 OIII subs not used due to quality...), all 180sec, Total time 237min (4 hours - almost :) )

P.S.

I am really puzzled why Baader included OIII 8nm in their Bundle (probably simple pricing tactics)... I think OIII  should be around 6nm to match the Bundle...
but then, -  probably SII would be too week and etc.

So try using your OIII while Moon is not in the way or even better, then it completely hiding... in my case, Moonless nights are  always cloudy :)

Edited by RolandKol

Share this post


Link to post
Share on other sites
7 minutes ago, RolandKol said:

It was  Ha / SII x 33, OIII x only 13 (around 40 OIII subs not used due to quality...), all 180sec, Total time 237min (4 hours - almost :) )

P.S.

I am really puzzled why Baader included OIII 8nm in their Bundle (probably simple pricing tactics)... I think OIII  should be around 6nm to match the Bundle...
but then, -  probably SII would be too week and etc.

So try using your OIII while Moon is not in the way or even better, then it completely hiding... in my case, Moonless nights are  always cloudy :)

For 4 hours you've got a lot of data. I must be missing something in myprocesing. I too got 4 hours on Rosette this season, but it hasn't turned out as vivid as yours.

Share this post


Link to post
Share on other sites
14 minutes ago, astrosathya said:

For 4 hours you've got a lot of data. I must be missing something in myprocesing. I too got 4 hours on Rosette this season, but it hasn't turned out as vivid as yours.

I used Pix to sort Images by quality and stack them based on quality, - maybe it was a trick.

Plus, in Light Polluted areas, it is difficult to compare the quality of the subs as if you have a direct light falling on, - yours will be worse...

I am lucky, my spot ended up in the shadow.... But trees limit my view very strongly, so I am not able to use optimal 300sec exposure.

P.S.

My subs are all on Unity gain, ASI1600MM-Pro

Edited by RolandKol

Share this post


Link to post
Share on other sites

I believe this is my absolute favourite image I have taken so far! 

 

Telescope: Skywatcher 130PDS
Mount: Skywatcher HEQ5 Pro
Camera: QHY 163M
Filters: Ha + R + G + B 

Total integration time: 14 hours 15 minutes
Exposure:
Ha:
32 X 512 sec
Red:
91 X 128 sec
Green:
91 X 128 sec
Blue
91 X 128 sec

+ Darks + Bias + Flats

Processed in Pixinsight and Photoshop CC

ngc2264 cone nebula.jpg

Edited by al-alami
  • Like 15

Share this post


Link to post
Share on other sites
17 hours ago, al-alami said:

I believe this is my absolute favourite image I have taken so far! 

 

Telescope: Skywatcher 130PDS
Mount: Skywatcher HEQ5 Pro
Camera: QHY 163M
Filters: Ha + R + G + B 

Total integration time: 14 hours 15 minutes
Exposure:
Ha:
32 X 512 sec
Red:
91 X 128 sec
Green:
91 X 128 sec
Blue
91 X 128 sec

+ Darks + Bias + Flats

Processed in Pixinsight and Photoshop CC

ngc2264 cone nebula.jpg

Congratulations on this one really like it, very different from the normal pallet, especially like the contrast in the fox fur. Your imaging has really come on leaps and bounds in the last couple of years.

  • Like 2

Share this post


Link to post
Share on other sites
3 minutes ago, Adam J said:

Congratulations on this one really like it, very different from the normal pallet, especially like the contrast in the fox fur. Your imaging has really come on leaps and bounds in the last couple of years.

Thank you Adam.  It all began with this thread, and help and advice from people like you. :D

  • Like 1

Share this post


Link to post
Share on other sites

Hi guys, anyone knows if there is a difference if bahtinov mask is larger than the primary mirror? 

For example, 130PDS p.mirror is 130mm, but OTA is 150mm.

I want to make/3d print bahtinov with gaps covering full 150mm diameter, to allow more light in for focusing in HA.

Share this post


Link to post
Share on other sites

Just finished checking/testing.

No difference... Almost.

But the larger gaps actually do allow to use shorter exposure on the same gain/iso, 

So a bit faster.

P.S.

"Perfect" (if such is possible) focus difference between 150mm and 130 was around 70microns.... PDS critical focus range is around 50... So .... Mathematically, should be a difference.

However,

Seeing is not perfect today.

Not yet sure.

But 5min stack with 150mm bahtinov focus looked just, just a bit better...

Again... Seeing could be a factor.

Share this post


Link to post
Share on other sites

Hi all,

Thought I'd share my latest 130PDS image of M81/M82.

All captured 24/3 on a modified 1100d.

30 x 300 seconds lights plus  20 flat and 20 bias. Stacked in DSS and tweaked in PS

All comments/advice welcome

Many thanks

Vern

 

PS (Large).jpg

 

 

Anyone know what the fuzzy on the left hand edge is? Is it an artifact or a galaxy? It appears to have a spiral structure

 

PS (Large) - Copy.jpg

Edited by vernmid
Wrong image posted
  • Like 4

Share this post


Link to post
Share on other sites

Hi,

Thats a really nice photo @vernmid! ?

The small fuzzy is UGC 5302, roughly magnitude 15.

Here's its simbad page: UGC 5302

Ive found colour balance is very difficult on M81 and 82, you could try reducing the blue saturation in the background, though? I love the stars--what Coma Corrector are you using?

John

Edited by JohnSadlerAstro
  • Thanks 1

Share this post


Link to post
Share on other sites
15 hours ago, JohnSadlerAstro said:

Hi,

Thats a really nice photo @vernmid! ?

The small fuzzy is UGC 5302, roughly magnitude 15.

Thanks John,

Amazed to have captured UGC 5302.

Coma corrector is a badder mpcc.

Will have another crack at processing  to improve background. 

Thanks again 

Vern 

Share this post


Link to post
Share on other sites
On 13/03/2019 at 22:30, al-alami said:

I believe this is my absolute favourite image I have taken so far! 

 

Telescope: Skywatcher 130PDS
Mount: Skywatcher HEQ5 Pro
Camera: QHY 163M
Filters: Ha + R + G + B 

Total integration time: 14 hours 15 minutes
Exposure:
Ha:
32 X 512 sec
Red:
91 X 128 sec
Green:
91 X 128 sec
Blue
91 X 128 sec

+ Darks + Bias + Flats

Processed in Pixinsight and Photoshop CC

ngc2264 cone nebula.jpg

Wow!. You always take absolutely awesome and stunning pictures!!!

  • Like 7

Share this post


Link to post
Share on other sites

Hi guys, took this image last night of M101 but it is in dire need of some flats as you can see.

image.png.469442387aaa82d652bde93b0a1a2294.png

What method do you guys use to take flats with the 130-PDS that minimises adding more tray light than you started with? last time I tried I got a gradient from one side of the image to the other...

  • Like 1

Share this post


Link to post
Share on other sites
1 hour ago, pipnina said:

What method do you guys use to take flats with the 130-PDS that minimises adding more tray light than you started with? last time I tried I got a gradient from one side of the image to the other...

I use a cheap LED flat panel with a sheet of A4 taped over it and along enough lead so I can take 3 photos at each of eight positions. By rotating it any gradient is 'neutralised' and I find this works very well.

  • Like 1

Share this post


Link to post
Share on other sites

Good idea to rotate the light source. 

But if anyone is using a laptop or monitor for flats, it's worth making sure that it is square on to the OTA. Purely because computer displays don't do so well off axis (like trying to view a monitor from an angle isn't as good as being directly in front of it).

  • Like 1

Share this post


Link to post
Share on other sites

Being as galaxy season is here, I've switched to the ASI178 Cool, which turns the 130 into something of a galaxy hoover :) 

Leo Quartet - ARP316 (usually overlooked for the triplet), 30x180 - only darks applied. Needs probably 100+ subs and proper calibration to make it decent:

Leo-Quintet_PSDBE.thumb.jpg.e11740fc1d619e7afa5447b4202d1ecd.jpg

  • Like 5

Share this post


Link to post
Share on other sites
8 minutes ago, Uranium235 said:

proper calibration to make it decent:

Hi,

I'd say it looks pretty decent already! ;) Really nice photo, I'm a fan of mono fuzzies.

Sadly these galaxies are just a little to small to be a realistic target with big 1000d pixels, but in my opinion they look better than the trio. :)

John

  • Thanks 1

Share this post


Link to post
Share on other sites
45 minutes ago, Uranium235 said:

Being as galaxy season is here, I've switched to the ASI178 Cool, which turns the 130 into something of a galaxy hoover :) 

Leo Quartet - ARP316 (usually overlooked for the triplet), 30x180 - only darks applied. Needs probably 100+ subs and proper calibration to make it decent:

Its a real shame ASI have stopped making this camera as I have always wanted one for a dedicated galaxy camera. 

Share this post


Link to post
Share on other sites
18 minutes ago, Adam J said:

Its a real shame ASI have stopped making this camera as I have always wanted one for a dedicated galaxy camera. 

Stopped making it? Thats a shame.... well, I suppose there would be the QHY equivalent if youre stuck for finding one.

Share this post


Link to post
Share on other sites
3 minutes ago, Uranium235 said:

Stopped making it? Thats a shame.... well, I suppose there would be the QHY equivalent if youre stuck for finding one.

Yes. Although I did think about uncooled and using the short exposure high gain technique to try and get increased resolution by being under some of the seeing. 

Have you tried 1000's of 5-10 second exposures at high gain with this?

Share this post


Link to post
Share on other sites
23 minutes ago, Adam J said:

Its a real shame ASI have stopped making this camera as I have always wanted one for a dedicated galaxy camera. 

According to TS, it looks like they will be getting one batch in a few days?

https://www.teleskop-express.de/shop/product_info.php/info/p8515_ASI178MMC-Cooled-Mono-CMOS-Camera---Chip-D-8-82-mm.html

image.png.3f1d7905fa8d7e3f3fea1bf478ed1d49.png

Share this post


Link to post
Share on other sites
2 minutes ago, vlaiv said:

Not sure about that but ZWO no longer list it on their own web page. 

https://astronomy-imaging-camera.com/product-category/dso-cameras

If you click on discontinued cameras then it is listed. 

Edited by Adam J

Share this post


Link to post
Share on other sites
1 minute ago, Adam J said:

Not sure about that but ZWO no longer list it on their own web page. 

https://astronomy-imaging-camera.com/product-category/dso-cameras

Could be that ZWO is no longer accepting customer orders because they stopped production, and above batch was ordered by TS some time ago.

Anyway, if you want that camera, I guess it's worth checking again after 9 days if it's in stock, or as suggested above - look at other vendors offerings.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By merlin100
      I'm tempted to go down the route of getting myself a brand new reflector...  My friend's old Meade 114/900 is a good telescope, but I want something of my own and with a bit more light gathering power.  To this end, I've been looking at a couple of different models and manufactures.  
      https://www.firstlightoptics.com/beginner-telescopes/skywatcher-explorer-130.html
      https://www.firstlightoptics.com/beginner-telescopes/skywatcher-explorer-130p.html
      https://www.firstlightoptics.com/reflectors/skywatcher-explorer-130m.html
      https://www.amazon.co.uk/Meade-Instruments-Polaris-Reflector-Telescope/dp/B01FG8JEGG
      I must admit, the Skywatcher Explorer 130M floats my boat, as it's motorised with a speed controller.
      Any thoughts or observations?🤔
    • By stevebb
      Celestron C8 XLT + extras and SkyWatcher Star Travel 80 (ST80)
      I have a Celestron C8 with XLT Starbrite coatings. Will include the full length base plate, both visual and imaging backs, scope rings, front 8" end cap and the finder scope with it. No box I'm afraid. Optics are good and clean, focal length is huge - 2300mm from memory. This lot would cost close to £1300 new and one with less spec went for £750 on fleabay recently. Might be interested in a part exchange or will let it go for £450 collection only.
      Also, I have a SkyWatcher Star Traveler 80 - good optics, used as a guide scope - just the scope itself (does not include the barlow in the photo) - now including dovetail bar and scope rings looking at around £50 for it.
      I have decided to save up for another refractor, WO, Equinox or even toward an Esprit. However, I would also consider p/ex for an Intel NUC and/or Pegasus Astro Pocket Powerbox.
      Please excuse some of the colours - I used my astro modded 6D which was in the observatory so the "nice" purple is actually black !!
      Both these are collection only.




    • By Clear Skies!
      I am going to buy Skywatcher EQ5 Pro Go-To mount. But, unfortunately, I am low on budget.
      So, does someone know where can I buy the cheapest EQ5 pro mount?
      Yesterday there was a low price for it (350 €), but they changed it.
      Thank you for your time!
    • By Bruno Marin
      I found this setup in internet and make me think, with AZEQ6 GT and 2 scopes, different weights and size, without counterweight in AZ mode! 
      - I can put a MAK100mm 3kg +- and a OO VX10l  12kg +- without counterweight?
       
      Does anyone have this setup mount and already used without counterweight with two telescopes of different weights? Is it really necessary to have a balance using in AZ mode?
      The problem to centralize the object with both scopes is true? With the SW AZEQ6 GT?
      Follow the images
      a TSA-120 with 6.5 kg i think and the other with 22kg i forgot the brand hehe you can help me?
       


    • By AstroRuz
      £180
      Selling a nice portable wide telescope with great glass and a great field of view
      I have two telescopes and I'm using the 80ED more currently and so this Telescope just isn't getting used anymore
      It has a longer dovetail (originally from the 80ED) so declination balance can be reached.
      Great performer for the price
      Collection only as P&P is like £40 (Northamptonshire - UK)
      Selling to fund a scope or mount upgrade.🤔
      Selling





×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.