Go Back   IceInSpace > Images > Deep Space

Reply
 
Thread Tools Rate Thread
  #1  
Old 10-06-2019, 08:05 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,877
Rho widefield Redcat 51

Another image from that series using the new Redcat 51.

I plan to do a more panels and form a mosaic.

https://pbase.com/gregbradley/image/169325610/large


Greg.Attachment 245039
Attached Thumbnails
Click for full-size image (Rho Ophiuchi 21 x 5 mins ISO640 EOS R RC51 PS processed V5 final image thumb.jpg)
194.9 KB178 views

Last edited by gregbradley; 10-06-2019 at 10:17 AM.
Reply With Quote
  #2  
Old 10-06-2019, 08:50 AM
Peter Ward's Avatar
Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
Posts: 8,090
Colour is a little bright, but, gee that's a uber-sharp piece of glass. Most excellent
Reply With Quote
  #3  
Old 10-06-2019, 10:11 AM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 6,980
It looks pretty sharp there Greg
Does the focuser have a way of correcting for tilt? It looks like you have some on the left side of the frame. With the star size difference you may find it difficult getting a nice merge between the frames for a mosaic.
Reply With Quote
  #4  
Old 10-06-2019, 10:16 AM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,877
Quote:
Originally Posted by Peter Ward View Post
Colour is a little bright, but, gee that's a uber-sharp piece of glass. Most excellent
Yeah I am finding my feet here with regards to colour with these DSLR type images. A lot on the net tend to be very colourful. I've pulled it back a little and it may still be too colourful. A hard call sometimes.

Quote:
Originally Posted by Atmos View Post
It looks pretty sharp there Greg
Does the focuser have a way of correcting for tilt? It looks like you have some on the left side of the frame. With the star size difference you may find it difficult getting a nice merge between the frames for a mosaic.
With a mosaic I overlap at least 25% and by then the stars are good, it won't be a problem.

No the lens itself is like any lens but it does end in an M48 male threaded end. You attach your T ring and mount it in your camera.

I have bought a tilt/tip adapter for it from Teleskop Services and will be adding it to before the T ring. I think I'll get one of those new copper T Rings William Optics are selling as well for even stronger and more accurate attachment. This type of optic is going to be sensitive to tilt and also its quite long and slightly heavy so that will put pressure on the mount.
On my ML16 I have it fully corrected and supported so round stars to the corners there.

Greg.
Reply With Quote
  #5  
Old 10-06-2019, 10:53 AM
Retrograde's Avatar
Retrograde (Pete)
a.k.a. @AstroscapePete

Retrograde is offline
 
Join Date: Oct 2011
Location: Sydney
Posts: 1,617
Another very nice image with the Redcat. Looks like you're having a lot of fun!

Yep probably a little over-saturated - mostly in blue though I think.
Reply With Quote
  #6  
Old 10-06-2019, 11:32 AM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 6,980
Quote:
Originally Posted by gregbradley View Post
With a mosaic I overlap at least 25% and by then the stars are good, it won't be a problem.

No the lens itself is like any lens but it does end in an M48 male threaded end. You attach your T ring and mount it in your camera.

I have bought a tilt/tip adapter for it from Teleskop Services and will be adding it to before the T ring. I think I'll get one of those new copper T Rings William Optics are selling as well for even stronger and more accurate attachment. This type of optic is going to be sensitive to tilt and also its quite long and slightly heavy so that will put pressure on the mount.
On my ML16 I have it fully corrected and supported so round stars to the corners there.

Greg.
That's interesting to note. I've usually been dealing with 10-15% overlap myself and found that tilt leads to irritating registration errors when merging the panels together. An external tip/tilt adapter will certainly help

The focuser on my Sky Rover has 3 screws on it that allow for the change of focuser collimation. They're fiddling and don't fine tune well out in the field but I've found doing it inside with a 2" Glatter and circular holographic a quick and easy way of getting it bang on at F/5.
Reply With Quote
  #7  
Old 10-06-2019, 12:19 PM
The_bluester's Avatar
The_bluester (Paul)
Registered User

The_bluester is offline
 
Join Date: Feb 2011
Location: Kilmore, Australia
Posts: 3,342
Great to see some real world images, I came very close to buying a Redcat. Maybe next year.
Reply With Quote
  #8  
Old 10-06-2019, 02:09 PM
Paul Haese's Avatar
Paul Haese
Registered User

Paul Haese is offline
 
Join Date: Jan 2009
Location: Adelaide
Posts: 9,937
Great colour Greg, certainly a crowd pleaser this region.
Reply With Quote
  #9  
Old 10-06-2019, 04:37 PM
strongmanmike's Avatar
strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,152
Now that's what I call colourful sharp too! Lovely

Looks like a pogo horse

Mike
Attached Thumbnails
Click for full-size image (Pogo Horse.jpg)
24.2 KB14 views
Reply With Quote
  #10  
Old 10-06-2019, 06:03 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,877
Quote:
Originally Posted by Atmos View Post
That's interesting to note. I've usually been dealing with 10-15% overlap myself and found that tilt leads to irritating registration errors when merging the panels together. An external tip/tilt adapter will certainly help

The focuser on my Sky Rover has 3 screws on it that allow for the change of focuser collimation. They're fiddling and don't fine tune well out in the field but I've found doing it inside with a 2" Glatter and circular holographic a quick and easy way of getting it bang on at F/5.
That's interesting about adjusting it inside. I'll have to check that out.

With the Microline I had to pack out the Redcat 51 about twice as much as I had to with the Pentax 645 lens.

Greg.
Reply With Quote
  #11  
Old 10-06-2019, 08:38 PM
Stevec35 (Steve)
Registered User

Stevec35 is offline
 
Join Date: Aug 2010
Location: Canberra
Posts: 3,654
Nice one Greg. The colour might be a bit intense for some but I think lots of colour works well for this object.

Cheers

Steve
Reply With Quote
  #12  
Old 11-06-2019, 06:04 AM
Placidus (Mike and Trish)
Narrowing the band

Placidus is offline
 
Join Date: Mar 2011
Location: Euchareena, NSW
Posts: 3,719
Yum.

Interesting to see how the dust at the back totally obscures the distant stars, even where there is lots of foreground emission.
Reply With Quote
  #13  
Old 11-06-2019, 08:01 AM
topheart
Registered User

topheart is offline
 
Join Date: Nov 2005
Location: Cairns
Posts: 1,087
Beautiful Greg!!
Like fireworks in the sky!
Cheers,
Tim
Reply With Quote
  #14  
Old 11-06-2019, 04:21 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,877
Quote:
Originally Posted by Stevec35 View Post
Nice one Greg. The colour might be a bit intense for some but I think lots of colour works well for this object.

Cheers

Steve
Thanks Steve.

Its easy to overdo the colour on these stock mirrorless camera images as they do colour so well.

Quote:
Originally Posted by Placidus View Post
Yum.

Interesting to see how the dust at the back totally obscures the distant stars, even where there is lots of foreground emission.

I imagine even though its blocking the light the dust is still parts per million type density.

Quote:
Originally Posted by topheart View Post
Beautiful Greg!!
Like fireworks in the sky!
Cheers,
Tim
Thanks Tim.

I like it so I intend to do a mosaic next time at my site.

These mirrorless and lens type images are only like 2 hours total so you can do a few each clear night.

Greg.

Greg.
Reply With Quote
  #15  
Old 11-06-2019, 06:01 PM
vlazg's Avatar
vlazg (George)
Registered User

vlazg is offline
 
Join Date: May 2014
Location: Darwin
Posts: 737
Nice Greg, an awesome and colorful part of the sky.
I will be doing a 2 part mosaic of this area if i get a chance
Reply With Quote
  #16  
Old 12-06-2019, 06:05 AM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline
 
Join Date: Oct 2007
Location: Sydney
Posts: 22,060
Super deep and colorful. That lens is indeed very sharp.
Reply With Quote
  #17  
Old 12-06-2019, 05:53 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,877
Quote:
Originally Posted by vlazg View Post
Nice Greg, an awesome and colorful part of the sky.
I will be doing a 2 part mosaic of this area if i get a chance
Thanks. Its a great area for a mosaic.

Quote:
Originally Posted by multiweb View Post
Super deep and colorful. That lens is indeed very sharp.
Cheers Marc. I've been having fun with the super widefield stuff and more fun to come but I am looking at getting the Honders back in action shortly.

Greg.
Reply With Quote
  #18  
Old 15-06-2019, 02:44 PM
Bart's Avatar
Bart
Don't have a cow, Man!

Bart is offline
 
Join Date: Apr 2013
Location: Adelaide, South Australia
Posts: 1,088
Lovely colour, Greg, I like it a lot.
Reply With Quote
  #19  
Old 15-06-2019, 06:36 PM
gregbradley's Avatar
gregbradley
Registered User

gregbradley is offline
 
Join Date: Feb 2006
Location: Sydney
Posts: 17,877
Quote:
Originally Posted by Bart View Post
Lovely colour, Greg, I like it a lot.
Thanks Bart. I am glad you like it.

Greg.
Reply With Quote
  #20  
Old 15-06-2019, 06:54 PM
Ryderscope's Avatar
Ryderscope (Rodney)
Registered User

Ryderscope is offline
 
Join Date: May 2006
Location: Glanmire, NSW
Posts: 2,169
A clear and definite statement with bold colours Greg
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 02:40 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement
Testar
Advertisement