My biggest concern last night was
tracking...I was deathly afraid that my Skyview deluxe mount wouldnt handle
the H-a test, but it did very well for 30 mins and I had no apparent
flexture.
Good! If you have flexure, tech pan will find it for
you.
Ok... in the darkroom is where my probs begin
once again...I got the photoflo right this time and had absolutely no problems
with smearing or spots..good..thats over with.
What did happen was the negs were too
dark...especially in the middle of the frame.
When you say that your negatives
are too dark, do you mean the whole neg (around the frame numbers and sprocket
holes) or just the exposed area? Are you shooting under a street light or somewhere dark? 30
minutes @ f2.5 isn't long at all. Ha filters will reject a lot of light
pollution, but they have their limits. I agree with Robert - if the hot
spot is really bad, try stopping down to f4. Your focus is less critical at
f4, your stars will still be extremely sharp. Ha filters do wonders for
chromatic problems, but they can't help you with
vignetting.
If your negs
are too dense over the entire negative, sprocket holes and leader then you
might have to look at cutting back on development time. (sorry Chuck!) When I
was using Lumicon film, I found that some batches were hypered to a higher
background fog level than others.
Why do women have to bother you at the
worst possible of times? Because they can?
One more thing...WoW...That filter is
amazing..the stars are soo small...incredible!
Thanks for posting that page John once
again.
You're welcome! You are going to love it when you start
shooting some shots in the Milky Way.
John Mirtle
Calgary, Ab. Canada