Olympus UK E-System User Group
Olympus UK E-System User Group

Join our unique resource for Olympus Four Thirds E-System DSLR and Pen and OM-D Micro Four Thirds photographers. Show your images via our free e-group photo gallery. Please read the e-group.uk.net forum terms and conditions before posting for the first time. Above all, welcome!


Go Back   Olympus UK E-System User Group > Show your photos > Foto Fair

Foto Fair Post your photos for friendly, non-critical feedback. This is the place to show pictures if you aren't yet ready for full-blooded critique, or simply want to share an interesting picture with other e-group visitors.

Reply
 
Thread Tools Display Modes
  #1  
Old 1st April 2016
birdboy birdboy is offline
Full member
 
Join Date: Jun 2011
Location: Essex
Posts: 1,362
Thanks: 343
Thanked 236 Times in 199 Posts
Likes: 180
Liked 320 Times in 155 Posts
Pinwheel Galaxy with 300mm F4

Thought I'll give the new lens a go at night sky last night. The lens was very good to manually focus but I do miss a zoom as an aide to finding the Galaxy. I took this from my back garden in Billericay quite heavy light polluted. I used 60 secs ISO800 300mm F4 tracking with my Star Adventurer. The street lights go out at 1 am and you can really see the difference in the change in the histogram when the lights go out. Its nowhere near how I want the image to come out when I look at others, but it is a start. The Pinwheel Galaxy M101 is quite small and is a very very faint blob on a single frame. I had to look for the star pattern around it to frame the camera. I took 198 frames stacked them in Deepsky Stacker and processed the stacked file in Star Tools. I really must find a dark sky site. I think this lens could deliver some really stunning deep sky images.

__________________
John

OM-D E-M1, 12-40 f2.8 Pro, Tamron 14-150mm f5.8, E5, E3, Zuiko 50-200mm SWD, Zuiko 12-60mm SWD, Zuiko ED 70-300mm f5.6, 50mmf2, Zuiko ED 9-18mm f5.6, Sigma 50-500mm f6.3, EC14, EC20, RM-1, VA-1
Reply With Quote
The Following 2 Users Say Thank You to birdboy For This Useful Post:
Bob Barger (2nd April 2016), Ricoh (2nd April 2016)
The Following Users Liked This Post:
alfbranch (1st April 2016), Beagletorque (2nd April 2016), Bengeo (2nd April 2016), Bikie John (2nd April 2016), cliff (3rd April 2016), Graham_of_Rainham (1st April 2016), Greytop (3rd April 2016), Hemlockwood (1st April 2016), IainMacD (2nd April 2016), Jim Ford (2nd April 2016), JohnGG (1st April 2016), Kiwi Paul (4th April 2016), Magus (1st April 2016), Nawty (2nd April 2016), OM USer (4th April 2016), PeterBirder (2nd April 2016), Petrochemist (2nd April 2016), Ricoh (2nd April 2016), skids (2nd April 2016), Wally (2nd April 2016), Willom (3rd April 2016), Zuiko (3rd April 2016)
  #2  
Old 1st April 2016
Graham_of_Rainham's Avatar
Graham_of_Rainham Graham_of_Rainham is offline
Administrator
 
Join Date: Nov 2007
Location: Rainham
Posts: 8,050
Thanks: 635
Thanked 931 Times in 720 Posts
Likes: 2,241
Liked 1,568 Times in 900 Posts
Re: Pinwheel Galaxy with 300mm F4

That is very good. So much is down to good technique but having a very good lens must help a lot.

I still find it incredible that you can record the light from something that is 21 million light-years away.

Well done. Looking forward to seeing more of these.
__________________
Graham

We often repeat the mistakes we most enjoy...
Reply With Quote
The Following User Says Thank You to Graham_of_Rainham For This Useful Post:
birdboy (2nd April 2016)
  #3  
Old 2nd April 2016
Wally's Avatar
Wally Wally is offline
Full member
 
Join Date: Oct 2010
Location: Land of the Prince Bishops
Posts: 3,769
Thanks: 256
Thanked 1,115 Times in 699 Posts
Likes: 520
Liked 1,450 Times in 726 Posts
Re: Pinwheel Galaxy with 300mm F4

I don't see much wrong with your effort if anything at all.

In fact I'm gob-smacked when I see what some people achieve with what could quite reasonably be considered a 'minimum' of equipment.

Suffice to say, this is one of those gob-smacking occasions.

Thanks for sharing
__________________
It's not what inspires us that is important, it's where the journey takes us.

Wally and his Collie with our Oly bits & bobs

Reply With Quote
The Following User Says Thank You to Wally For This Useful Post:
birdboy (2nd April 2016)
  #4  
Old 2nd April 2016
Nawty Nawty is offline
Full member
 
Join Date: Jan 2015
Location: Hampshire
Posts: 192
Thanks: 6
Thanked 32 Times in 30 Posts
Likes: 25
Liked 61 Times in 38 Posts
Re: Pinwheel Galaxy with 300mm F4

That is fab
Reply With Quote
The Following User Says Thank You to Nawty For This Useful Post:
birdboy (2nd April 2016)
  #5  
Old 2nd April 2016
birdboy birdboy is offline
Full member
 
Join Date: Jun 2011
Location: Essex
Posts: 1,362
Thanks: 343
Thanked 236 Times in 199 Posts
Likes: 180
Liked 320 Times in 155 Posts
Re: Pinwheel Galaxy with 300mm F4

Quote:
Originally Posted by Graham_of_Rainham View Post
That is very good. So much is down to good technique but having a very good lens must help a lot.

I still find it incredible that you can record the light from something that is 21 million light-years away.

Well done. Looking forward to seeing more of these.
Thanks Graham I find it incredible that they know its that far away.
__________________
John

OM-D E-M1, 12-40 f2.8 Pro, Tamron 14-150mm f5.8, E5, E3, Zuiko 50-200mm SWD, Zuiko 12-60mm SWD, Zuiko ED 70-300mm f5.6, 50mmf2, Zuiko ED 9-18mm f5.6, Sigma 50-500mm f6.3, EC14, EC20, RM-1, VA-1
Reply With Quote
  #6  
Old 2nd April 2016
Ricoh Ricoh is offline
Full member
 
Join Date: Apr 2014
Location: Lancashire
Posts: 5,792
Thanks: 592
Thanked 421 Times in 373 Posts
Likes: 787
Liked 1,919 Times in 1,143 Posts
Re: Pinwheel Galaxy with 300mm F4

Quote:
Originally Posted by birdboy View Post
Thanks Graham I find it incredible that they know its that far away.
As many know, they deduce distance from the light intensity (falls off as the square of the distance) using supernovae to calibrate the light intensity at a distance.

I must add my praise, you've produced a remarkable image that you should be really proud of.
__________________
Steve

on flickr
Reply With Quote
The Following User Says Thank You to Ricoh For This Useful Post:
birdboy (2nd April 2016)
  #7  
Old 2nd April 2016
crimbo crimbo is offline
Full member
 
Join Date: Jan 2008
Location: Shetland
Posts: 1,736
Thanks: 100
Thanked 149 Times in 130 Posts
Likes: 22
Liked 122 Times in 62 Posts
Re: Pinwheel Galaxy with 300mm F4

Excellent ...
__________________
chris
shetland
Reply With Quote
The Following User Says Thank You to crimbo For This Useful Post:
birdboy (2nd April 2016)
  #8  
Old 2nd April 2016
IainMacD's Avatar
IainMacD IainMacD is offline
Full member
 
Join Date: Mar 2008
Location: Drumnadrochit
Posts: 3,933
Thanks: 1,226
Thanked 547 Times in 490 Posts
Likes: 1,849
Liked 846 Times in 238 Posts
Re: Pinwheel Galaxy with 300mm F4

Very well done John.


Maybe I could justify this lens with SWMBO by saying I wouldn't need a telescope? Trouble is I haven't mentioned a telescope... yet; that's a good conversation starter for tomorrow!
__________________
Iain

E-M5 II, E-M1, E-M1 II, 7.5, 8-18, 12-40, 25, 40-150, 45, 60, 300

Website
Flickr
Reply With Quote
The Following User Says Thank You to IainMacD For This Useful Post:
birdboy (2nd April 2016)
  #9  
Old 2nd April 2016
Bikie John's Avatar
Bikie John Bikie John is offline
Full member
 
Join Date: Nov 2008
Location: Wessex
Posts: 3,889
Thanks: 186
Thanked 639 Times in 567 Posts
Likes: 471
Liked 712 Times in 478 Posts
Re: Pinwheel Galaxy with 300mm F4

That is amazing John, I would normally expect an image like that to come from a heavy-duty scope.

John
Reply With Quote
The Following User Says Thank You to Bikie John For This Useful Post:
birdboy (2nd April 2016)
  #10  
Old 2nd April 2016
wornish's Avatar
wornish wornish is offline
Senior Member
 
Join Date: Sep 2015
Location: Cheshire
Posts: 5,530
Thanks: 314
Thanked 492 Times in 379 Posts
Likes: 2,555
Liked 1,462 Times in 717 Posts
Re: Pinwheel Galaxy with 300mm F4

Just superb !

How did you manage to get the image on target..

I have a star adventurer and with something this feint its more hit and miss.
I have tried using ISO6000 to get the right framing but its still very difficult.

Great job.
__________________
Dave

My Flickr
Reply With Quote
The Following User Says Thank You to wornish For This Useful Post:
birdboy (2nd April 2016)
  #11  
Old 2nd April 2016
birdboy birdboy is offline
Full member
 
Join Date: Jun 2011
Location: Essex
Posts: 1,362
Thanks: 343
Thanked 236 Times in 199 Posts
Likes: 180
Liked 320 Times in 155 Posts
Re: Pinwheel Galaxy with 300mm F4

Quote:
Originally Posted by wornish View Post
Just superb !

How did you manage to get the image on target..

I have a star adventurer and with something this feint its more hit and miss.
I have tried using ISO6000 to get the right framing but its still very difficult.

Great job.
Thanks Dave.
It was difficult to get on target but I had had some practice with the bigma.
I started off with looking at Mizar as its got two stars very near each other. The Pinwheel Galaxy I see as a triangle with Mizar and Alkaid. I have a geared tripod head on the Star Adventurer. so I drop down from Mizar and I notice what I see as a group of stars that has a similar shape to Ursa Major with fours stars to the left of the Pinwheel and a tail over the top.

This is what one framed looks like although using live view and bulb mode to focus showed less detail.

__________________
John

OM-D E-M1, 12-40 f2.8 Pro, Tamron 14-150mm f5.8, E5, E3, Zuiko 50-200mm SWD, Zuiko 12-60mm SWD, Zuiko ED 70-300mm f5.6, 50mmf2, Zuiko ED 9-18mm f5.6, Sigma 50-500mm f6.3, EC14, EC20, RM-1, VA-1
Reply With Quote
The Following User Liked This Post:
wornish (3rd April 2016)
  #12  
Old 2nd April 2016
Imageryone Imageryone is offline
Full member
 
Join Date: Nov 2008
Location: Suffolk,England
Posts: 4,934
Thanks: 1,101
Thanked 797 Times in 755 Posts
Likes: 656
Liked 564 Times in 336 Posts
Re: Pinwheel Galaxy with 300mm F4

Keep up the good work, not a subject I have any knowledge of, but that doesn't dim my enjoyment.
__________________
The picture tells the story, great when you have a bad memory.DW.
Reply With Quote
The Following User Says Thank You to Imageryone For This Useful Post:
birdboy (2nd April 2016)
  #13  
Old 2nd April 2016
birdboy birdboy is offline
Full member
 
Join Date: Jun 2011
Location: Essex
Posts: 1,362
Thanks: 343
Thanked 236 Times in 199 Posts
Likes: 180
Liked 320 Times in 155 Posts
Re: Pinwheel Galaxy with 300mm F4

Thank you to all the praises I got on this but I have to say that the praise should go to whoever worked out the method of taking distance galaxies this way.

The principle seems to be down to statistics. Someone found out that to reduce the noise you needed to take many pictures of the same bit of sky. Noise in an image is unwanted pixels and it is typically random. So if you take several pictures of the same bit of sky the stars and nebula will always appear in the same place any thing else has a probability that it is noise. This is where Deep Sky Stacker comes in it stack's the images and reduces the noise. 9 frames give a 3x reduction in noise 100 frames a 10 x reduction.

The next bit of magic comes from Star Tools which teases out the really faint bits of the galaxy getting rid of a bit more noise until you end up with this.

I am hoping to improve on this by taking more hours worth of frames and stacking them. I have the ground marked with where I put my tripod. The trouble is I only seemed to get one good clear night every few weeks. Sunday would be a good night if its clear because the street lights go out at midnight so I should be able to get 2-3 hours worth of images.

I have zoomed in a bit more to show more detail of the Galaxy.
__________________
John

OM-D E-M1, 12-40 f2.8 Pro, Tamron 14-150mm f5.8, E5, E3, Zuiko 50-200mm SWD, Zuiko 12-60mm SWD, Zuiko ED 70-300mm f5.6, 50mmf2, Zuiko ED 9-18mm f5.6, Sigma 50-500mm f6.3, EC14, EC20, RM-1, VA-1
Reply With Quote
  #14  
Old 3rd April 2016
Ricoh Ricoh is offline
Full member
 
Join Date: Apr 2014
Location: Lancashire
Posts: 5,792
Thanks: 592
Thanked 421 Times in 373 Posts
Likes: 787
Liked 1,919 Times in 1,143 Posts
Re: Pinwheel Galaxy with 300mm F4

We're looking at the light record ~21million years in age, and counting, long before man evolved - it is amazing.

Several supernova have been recorded (more recently a type 1a in August 2011 and a luminous nova in February 2015, according to Wikipedia). If you keep looking, who knows you might be lucky and hit the jackpot by seeing the next supernova - it's estimated to consist of one trillion stars.
__________________
Steve

on flickr
Reply With Quote
  #15  
Old 3rd April 2016
birdboy birdboy is offline
Full member
 
Join Date: Jun 2011
Location: Essex
Posts: 1,362
Thanks: 343
Thanked 236 Times in 199 Posts
Likes: 180
Liked 320 Times in 155 Posts
Re: Pinwheel Galaxy with 300mm F4

Quote:
Originally Posted by Ricoh View Post
We're looking at the light record ~21million years in age, and counting, long before man evolved - it is amazing.

Several supernova have been recorded (more recently a type 1a in August 2011 and a luminous nova in February 2015, according to Wikipedia). If you keep looking, who knows you might be lucky and hit the jackpot by seeing the next supernova - it's estimated to consist of one trillion stars.
This is quite interesting and as you say amazing put in that contex. We tend to think of a photographic picture as something taken at this moment in time, a record in our time. But with astrophotography we are taking a pictures of something that happened a long time ago. Now I need to recharge my flux capacitor.
__________________
John

OM-D E-M1, 12-40 f2.8 Pro, Tamron 14-150mm f5.8, E5, E3, Zuiko 50-200mm SWD, Zuiko 12-60mm SWD, Zuiko ED 70-300mm f5.6, 50mmf2, Zuiko ED 9-18mm f5.6, Sigma 50-500mm f6.3, EC14, EC20, RM-1, VA-1
Reply With Quote
Reply

Thread Tools
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sold Samsung Galaxy Tablet StephenL For sale or wanted small ads 7 6th August 2014 02:40 PM
HELP! Samsung Galaxy Tab 2 10.1 Apps you use Chevvyf1 The lounge 6 1st April 2013 06:28 PM
Use of Samsung Galaxy tablet for backup on the go benvendetta Accessory talk 14 11th March 2013 10:25 AM
Galaxy-S2 Portraits pandora The lounge 4 6th November 2012 04:09 PM
Apple iPad 2 -vs - Galaxy Tab 2 Android 4.0 Chevvyf1 The lounge 80 13th September 2012 12:27 PM


All times are GMT. The time now is 02:22 PM.


The Write Technology Ltd, 2007-2019, All rights reservedAd Management plugin by RedTyger