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View Full Version here: : Trifid - Why Steady Tracking is Important


2020BC
27-09-2006, 06:15 PM
Here's an example of why good tracking is important.

Taken on a breezy night out the left image is a stack of the best 4 subs: 4 x 4mins. The right image is a stack of the best 10 subs: 10 x 4mins.

Discarding 6 subs gives a nicer end result. The left one is reduced somewhat, but you get the idea. Just look at the shape of the stars and the clearer image in the core.

Of 23 x 4 mins of subs only 4 had near-round stars. 19x4 (76) mins of data wasted....:rolleyes: Frustrating, what? :lol:

I can just imagine the result with 76 minutes of good data...:).

How does a Losmandy G-11 handle a breeze ?

spearo
27-09-2006, 06:19 PM
for some reason I cant see the images
frank

spearo
27-09-2006, 06:20 PM
never mind...they have come through...blame my slow dial up!
Nice!
I agree, nothing more frustrating than having to discard images, i regularly discard more than I keep
Glad to hear I'm not alone there
frank

EzyStyles
27-09-2006, 06:23 PM
the stars are nicer but the more you stack the less noise it will be. The right one has less noise.

Great image btw.

Lee
27-09-2006, 06:24 PM
The G-11 should handle a decent breeze - imaging quality in the breeze depends on what sized sail (read- scope) you have to catch the wind....
I know I've walked into mine (empty tripod no less) - it didn't budge - I did. Very solid.

tornado33
28-09-2006, 12:58 PM
yes great colours there
Scott