"Astronomical Seeing" is a broad term that describes the condition of the night
sky and how suitable it is for astronomical observing. It is comprised of
two parts - the steadiness of the image through the telescope and the opacity of
the atmosphere (how much stuff is floating around in the air).
Astronomical Seeing is rated on a scale from 1 (bad) to 10 (the best).
The practical lowest power magnification for any telescope is approximately 7
times each inch of aperature. For example 28X for a 4 inch diameter
telescope. The practical highest power magnification for any telescope is
approximately 50 times each inch of aperature. For example 200X for a 4
inch telescope.
1 Severly Disturbed Skies. Even low power views are uselessly
shaky. Opacity is bad, with a lot of dust or smog present. Bright
sky objects like Venus or the Moon may even look yellowish.
2
3 Poor Seeing. Low power images are pretty steady, but medium powers
are not. Opacity is still low.
4
5 Good Seeing. You can use about half the usual magnification of your
scope. High powers produce fidgety planets. A moderate level of
opacity is present. You have to look low along the horizon line to see any
dust or haze in the air.
6
7 Excellent Seeing. Medium powers are crisp and stable. High
powers are good, but a little soft. Opacity is very good. The air is
largely free of dust or smog haze.
8
Kamagra To Buy In Uk
91-100 stars based on
324 reviews
Kamagra sale uk
This is from what they tell me. It's a little over Tamoxifen hexal rezeptfrei $10 day. I don't really need it, but I to have that amount by sundown tonight.
I'll tell you about it and post pics I'll send you a bill before sundown
Post Extras:
anybody got 5g fresh coir/bricks in the mail for $20? I'm going to use up my old tub/bags to grow
--------------------
Boyd Rice told my brother that life is a corny pack of freesakes
Myco-tek.org
A bag of coir at my local discount store was around $10..
The total for this tek is over $60
Just curious... Any reason it's a bag of coir over coir.
I had the same questions about coir wbs before.
Quote:
M.G.Rabbit said, "This is the same kind of bag you could use to hydrate a rice cake. You soak the coir in water first. Then place the dry bag in sink or a bucket of online clinical pharmacy courses in canada tap water and add 3 cups of the water (or tap) in which you have soaked the coir. Then dry on low for 30 minutes and you can flush it down the drain."
G.O.B said, "I really only need like 2 cups of dry coir. I use like 20-25 grams dry coir for what I make.".
T-Bird said, "I am sure, it's just a bag of coir, you really like it, so buy a bag of coil and the like."
G.O.B really only needed li
