The following images are of the Ring Nebula. The first is from 6-22-15 and the other two are from 6-19-15. I wanted to see how increasing the exposure time affected the images. They had a profound affect, at least to me. The one problem is there is an increase in the noise. Perhaps even more stacked images would fix that problem. That will be another night...
M57 - Ring Nebula (mag +8.8)
Location: Front yard, Monroe, CT
Date/Time: 6/19/15 23:48 PM
Camera: Canon EOS Rebel T3i, Backyard EOS
Camera: Canon EOS Rebel T3i, Backyard EOS
Telescope: Orion ED80 80mm f/7.5 Apochromatic Refractor Telescope
Mount: Orion Sirius EQ-G GoTo Telescope Mount
Autoguiding: None
Focal Length: 600mm (lens)
f/7.5
Exposure: 1-20s, 2-60s (2min 20s total)
ISO: 1600
ISO: 1600
Post Processing: DSS, Photoshop (Darken), Picasa3 (crop)
M57 - Ring Nebula (mag +8.8)
Location: Boothe Memorial Observatory, Stratford, CT
Date/Time: 6/19/15 22:18 PM
Camera: Canon EOS Rebel T3i
Camera: Canon EOS Rebel T3i
Telescope: Orion ED80 80mm f/7.5 Apochromatic Refractor Telescope
Mount: Orion Sirius EQ-G GoTo Telescope Mount
Autoguiding: None
Focal Length: 600mm (lens)
f/7.5
Exposure: 3-6s
ISO: 1600
ISO: 1600
M57 - Ring Nebula (mag +8.8)
Location: Boothe Memorial Observatory, Stratford, CT
Date/Time: 6/19/15 22:18 PM
Camera: Canon EOS Rebel T3i
Camera: Canon EOS Rebel T3i
Telescope: Orion ED80 80mm f/7.5 Apochromatic Refractor Telescope
Mount: Orion Sirius EQ-G GoTo Telescope Mount
Autoguiding: None
Focal Length: 600mm (lens)
f/7.5
Exposure: 3-6s
ISO: 1600
ISO: 1600
Post Processing: DSS, Photoshop, (Darken), Picasa3 (crop, labeling)
M57 - Ring Nebula (mag +8.8)
Location: Front yard, Monroe, CT
Date/Time: 6/19/15 23:48 PM
Camera: Canon EOS Rebel T3i, Backyard EOS
Camera: Canon EOS Rebel T3i, Backyard EOS
Telescope: Orion ED80 80mm f/7.5 Apochromatic Refractor Telescope
Mount: Orion Sirius EQ-G GoTo Telescope Mount
Autoguiding: None
Focal Length: 600mm (lens)
f/7.5
Exposure: 1-20s, 2-60s (2min 20s total)
ISO: 1600
ISO: 1600
Post Processing: DSS, Photoshop (Darken, Crop)
M57 - Ring Nebula (mag +8.8)
Location: Front yard, Monroe, CT
Date/Time: 6/19/15 23:48 PM
Camera: Canon EOS Rebel T3i, Backyard EOS
Camera: Canon EOS Rebel T3i, Backyard EOS
Telescope: Orion ED80 80mm f/7.5 Apochromatic Refractor Telescope
Mount: Orion Sirius EQ-G GoTo Telescope Mount
Autoguiding: None
Focal Length: 600mm (lens)
f/7.5
Exposure: 1-20s, 2-60s (2min 20s total)
ISO: 1600
ISO: 1600
Post Processing: DSS, Photoshop (Darken, Crop, Noise Reduction)
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