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

This page was last updated on 08/28/14.

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FOR SALE 10in Meade LX200 EMC

About  Horizontal Mike

Horizontal Hell

Planetary Nebula Discovery

Equipment

Observatory

Clear Dark Sky Charts

Local Links

Analysis Page

The Woodshop

Wood Working Links

Old Navy Pics 1974

 

GALLERIES

NEWEST Images

Comets ISS Shuttle Flyovers etc

Clusters

Galaxies

Moon Images

Nebula

Eclipsing Infrared Binary

Yerkes Observatory

Texas Weather

Birds & Critters

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

 

Imaging Offsets Page

I spent nearly 4-hours collecting this data with back-to-back LUM-filter temperature matched pairs.  What I found is that the data does NOT appear to be linear in that the LUM data change rate actually increases as temperature drops get closer to 0C.

FOCUSER: FeatherTouch Focuser #FTF-2008 with 6.55 micron/step movement.

SCOPE: NP-127 measured at 522mm FL and f/4.1 with Televue proprietary NP-127 0.8x focal reducer.

CCD: ST-10XME w/CFW10 with ST-402ME Autoguider on TMB80/480.

MOUNT: Mountain Instruments MI-250