Horizontal Heavens Observatory "...From  A Galaxy Far, Far Away"
Clear Sky Clock  

This page was last updated on 04/26/08.

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MI-250 Mount

Equipment

The Observatory

First Telescope

About  Horizontal Mike

Analysis Page

Seeing Forecast

Horizontal Hell

GALLERIES

NEWEST Images

Clusters

Galaxies

Nebula

Yerkes Observatory

Planetary Nebula Page

New Unidentified Nebula Candidates

Eclipsing Infrared Binary

Birds & Critters

Texas Weather

Scorpius

Moon Images

Moon Page 2

M42 Orion Nebula

NGC2024

NGC2261 + NGC2264 Nebula

 

TECHNICAL INFORMATION

MoonLite Focuser

Photometrics Cooler

Flocking LX200R

LiteBox for Flats

CCD Inspector Page

DEC Motor Modifications

Dovetail Mounting Details

Focal Reducer Information

LXD55 Mount Mods

Meade Superwedge Modifications

Robo-Focus

 

Seeing Forecast

Image Control
Explain color and details when you mouse-over:
Click on a block to show full forecast map

Cloud Cover

Overcast 90% covered 80% covered 70% covered 60% covered 50% covered 40% covered 30% covered 20% covered 10% covered Clear

Transparency
Poor Below Average Average Above average Transparent

Seeing
Bad 1/5 Poor 2/5 Average 3/5 Good 4/5 Excellent 5/5

Seeing in arc-sec.

Rating

Description

V  < 0.4"

Excellent 5/5

Perfect motionless diffraction pattern.

IV ~ 0.4-0.9"

Good 4/5

Light undulations across diffraction rings.

III  ~ 1.0-2.0"

Average 3/5

Central disc deformations. Broken diffraction rings.

II  ~ 3.0-4."

Poor 2/5

Important eddy streams in the central disc. Missing or partly missing diffraction rings.

I    > 4"

Bad 1/5

Boiling image without any sign of diffraction pattern.