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Bahtinov Masks

Flat Fielders





After more than 15 years of serving the astronomy community, we are retiring from the business. All our remaining stock is now at closeout pricing. We will continue to support our current customers at least through 2023, and will continue to enhance our free Astrogadgets program. Thank you to all of our customers over the years. It's been a great ride!

-John Wunderlin

Flat Fielder

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TComp Software

Temperature compensating focus software
Works with any ASCOM-based focuser
Stay focused all night long
Easy adjustment for different filters
Very easy to use
Money back guarantee
Windows 10, 8

Click here to download your free trial*

*free trial version limits automatic focus adjustments to 2 times before restarting the software

"Low cost temperature compensation focusing"

If you own a motorized focuser and are tired of having to refocus because of temperature changes, then this software is for you.

Telescope tubes expand and contract with temperature changes. Even though the movement is slight, the optimum focus point is extremely sensitive to these changes. TComp will monitor temperature changes and automatically refocus your telescope so it remains precisely focused all night long. The expansion is extremely linear for most equipment which means that once the motion per degree of change is established, the focus change can be applied for a wide range of temperature shift.

After starting the software and selecting your ASCOM-based focuser, focus your telescope with your Bahtinov mask or another method which ensures precise focus.

Add the focus point and then wait for the temperature to change by at least 3 degrees. Add the 2nd focus point.

Click on the 'Compensate' checkbox and your focuser will now adjust for temperature shifts as needed.

Note that orders will be processed by All-Pro Software, LLC. Contact information:

All-Pro Software
2935 S Fish Hatchery Rd #130
Fitchburg, WI 53711

Copyrightę 2023 All-Pro Software, LLC