Delphinus Constellation (astronomy winter sky nighttime ). Photo by Magicman
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Delphinus Constellation

Uploaded by: Magicman

Monday December 9, 2013

Government Camp, OR (Current Weather Conditions)

Caption: My first attempt at night stellar photography...

Manufacturer: Canon

Model: Canon EOS DIGITAL REBEL XTi

Orientation: top - left

x-Resolution: 72.00

y-Resolution: 72.00

Resolution Unit: Inch

YCbCr Positioning: co-sited

Compression: JPEG compression

Exposure Time: 30 sec.

FNumber: f/4.0

Exposure Program: Manual

ISO Speed Ratings: 200

Exif Version: Exif Version 2.21

Components Configuration: Y Cb Cr -

Shutter speed: -4.91 EV (APEX: 0, 29 sec.)

Aperture: 4.00 EV (f/4.0)

Exposure Bias: 0.00 EV

Metering Mode: Average

Flash: Flash did not fire, compulsory flash mode.

Focal Length: 70.0 mm

User Comment:

FlashPixVersion: FlashPix Version 1.0

Color Space: sRGB

PixelXDimension: 3888

PixelYDimension: 2592

Focal Plane x-Resolution: 4433.30

Focal Plane y-Resolution: 4453.61

Focal Plane Resolution Unit: Inch

Custom Rendered: Normal process

Exposure Mode: Manual exposure

White Balance: Manual white balance

Scene Capture Type: Standard

InteroperabilityIndex: R98

InteroperabilityVersion: 0100

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Display: 50, 100, 200 Sort: Newest First - Order Posted
6. Magicman
2:34 AM GMT on December 11, 2013
Well...I'm "in search of" a dedicated lens for this....My big thanks to Outsideshot & especially Katy for the pointers!!!
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Member Since: March 13, 2005 Comments: 476
5. katy99780
4:37 AM GMT on December 10, 2013
Quoting Outsideshot:
Magicman try the 500 rule: 500 divided by the focal length of your lens = the longest exposure before stars start to trail or blur (in seconds) in your case using a 70mm lens you shouldn't leave the shutter open much more then 7sec and up your iso to 1600 and open up the aperture as much as possible(lowest number) and use the self timer if your camera has one. I hope this helps
(making note of that...)

:) Thanks outsideshot, I'm always cruising others' night shots for information!

So that would be 500 divided by 70 in this case, to get 7 seconds exposure? I think he's got his f number as wide open as his lens will go.

Might this be a difficult lens to use for star shots because of it's focal length / f-number combination?

This might be a good lens for portraits perhaps? (I'm guessing, always want to learn)

This seems to me to be a very difficult shot with that lens. A lens with smaller f-number capability might give better results...?
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Member Since: October 3, 2005 Comments: 29983
4. Outsideshot
3:32 AM GMT on December 10, 2013
Magicman try the 500 rule: 500 divided by the focal length of your lens = the longest exposure before stars start to trail or blur (in seconds) in your case using a 70mm lens you shouldn't leave the shutter open much more then 7sec and up your iso to 1600 and open up the aperture as much as possible(lowest number) and use the self timer if your camera has one. I hope this helps
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Member Since: February 2, 2011 Comments: 562
3. Outsideshot
3:32 AM GMT on December 10, 2013
Magicman try the 500 rule: 500 divided by the focal length of your lens = the longest exposure before stars start to trail or blur (in seconds) in your case using a 70mm lens you shouldn't leave the shutter open much more then 7sec and up your iso to 1600 and open up the aperture as much as possible(lowest number) and use the self timer if your camera has one. I hope this helps
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Member Since: February 2, 2011 Comments: 562
2. Magicman
3:16 AM GMT on December 10, 2013
Thanks for the encouragement GBPACKERS....I have been struggling with my night photography attempts; katy99780 gave me enough pointers to get this one....I swear I couldn't even get my shutter to open previously.
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Member Since: March 13, 2005 Comments: 476
1. GBPACKERS
3:07 AM GMT on December 10, 2013
or the seven sisters...... great shot!!!!
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Member Since: February 3, 2011 Comments: 296

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About Magicman

Magicman

I'm very lucky to live, travel and work throughout the Greater Pacific Northwest and hope my photos bring a smile to your day. Please feel free to leave a comment, I really enjoy hearing from my fellow WeatherUnderground photographers. Have a great day and thanks for looking.a href="http://www.maploco.com/" onclick="if(!checkUrl(this.href)) return false;" rel="nofollow" target="_blank"

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