Astronomy Comparisons

 

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Comparison of
The Canon 20Da & the Canon 40D

M27 - Dumbbell Nebula
Camp Highroad (09-03-07)

F10-8in;  210secs; 15 image Stack
ISO 1600; (dark subtract) w/autoguiding
Canon 20Da
M27 - Dumbbell Nebula
South Riding (10-13-07)

F10-8";  300sec Frames; 22 Image Stack
ISO 1600; (dark substract); w/eFinder Autoguiding
Canon 40D

 

M27 - Dumbbell Nebula
South Riding (9-27-05)

F10-10in;  180secs; 10 image Stack
ISO 1600; (dark subtract) w/autoguiding
Canon 20Da
M27 - Dumbbell Nebula
South Riding (10-01-06)

F10-10in;  302secs; 4 image Stack
ISO 800; (dark subtract) w/autoguiding
Canon 20Da

 

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Comparison of
The Canon 20Da & the Canon 10D

 

Dumbbell  (M27)
 09-07

Left 8" LX200R Mounted on Losmandy G11
F10 - 2000mm;  Canon 20Da
Right FLT110 Mounted on Losmandy G11
F7 - 770mm;  Canon 10D
 

 

 

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Comparison of the

WO FLT 110 with Field Flattener
vs.
WO FLT 110 without Field Flattener

WO FLT 110 (Full Frame)
w/Field Flattener
Horsehead/Flame Nebula

F7-110mm;  3mins; 22 image Stack
ISO 1600; (dark subtract) w/autoguiding
WWO FLT 110 (Full Frame)
without Field Flattener

NGC 891
F7-110mm;  3.0mins; 18 Image Stack
ISO 1600; (dark subtract) w/autoguiding

 

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Comparison of
The Horsehead Nebula Imaged
With and Without a SkyGlow Filter

Horsehead Nebula
South Riding (1-26-06)

F7-80mm;  4mins; 16 image Stack
ISO 1600; (dark subtract) w/autoguiding

Horsehead Nebula
South Riding (1-27-06)

F7-80mm;  SkyGlow Filter; 5mins; 8 image Stack
ISO 1600; (dark subtract) w/autoguiding

 

 

 

Comparison of
Chromatic Aberration Effect
Of
APO vice Non-APO
Telescope

 

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Comparison of
Canon 20Da
With and Without Autoguiding

 

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Comparison of
Canon 20Da and Canon 10D