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Douglas Rollain

M20 Trifid Nebula in LRGBHa

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Posts Made By: Brad Geisler

January 24, 2010 01:47 AM Forum: Equipment Talk

Power for out in the "field"

Posted By Brad Geisler

Hi john,
For what it is worth, the "powertanks" don't seem to last long. Get a deep cycle marine battery for about the same price. It will last easily all night, or two nights or more even with lots of power demand for accessories. Draw back is they are lead acid and heavy to carry, but they can keep you in full power for a couple nights. Go for the most 'Amp Hours" you want to lug around. I've had a 75 amp hour for three years now and only recharge it after an all nighter or two good nights, and then it is still over 11 volts when I charge it. Full charge is about 14 volts, which is well within the operating limits of most 12 volt systems. I recharge it after it has dropped below 12 volts. Tried a standard car battery, but they don't like to be discharged much and don't last long. Weighs 50 pounds but worth every penny and pound. Get a deep cycle charger to match the battery and it should perform for years with proper charging.
Powerfull clear skies,
Brad

February 5, 2010 04:20 PM Forum: CCD Imaging and Processing/Solar System

Mars on APOD

Posted By Brad Geisler

Paul,
Thanks for the heads up, what an outstanding image !!!
Brad

May 14, 2010 05:33 AM Forum: Celestron

Interesting C14 Blowout Sale

Posted By Brad Geisler

Rod,

Might be that the 1st load of 14 EDGE IS ABOUT TO SHIP ????

No real clue, but could be like Meades EP sale, it is over now.

Discontinued items ????

Wish I needed one, what a great price point for a big SCT.

Brad

May 22, 2010 07:05 AM Forum: Insects - Flowers and Other Small Stuff - Photos

Morning Roses

Posted By Brad Geisler

Great shot John,

I love the dark background, just like a well collimated APO.

Either that, or a fast shutter speed in low light.

June 20, 2010 05:10 AM Forum: Refractors

Opinions on these

Posted By Brad Geisler

Floyd,

Aperture rules with this fine selection of notable glass.

The TEC140 is on my bucket list. I obviously don't have it yet since it is on my list.

Hope to soon, though.

Brad

June 21, 2010 08:27 PM Forum: CCD Imaging and Processing/Solar System

Jupiter 21 June 2010 (Io transit)

Posted By Brad Geisler

Rolando,
Very nice image, wonderfull detail !!!
Brad

June 28, 2010 04:57 PM Forum: CCD Imaging and Processing/Deep Sky

Comet McNaught crossing NGC891

Posted By Brad Geisler

Excellant image James, I really enjoyed it. Very unique and well framed.
Brad

July 22, 2010 04:35 AM Forum: Film Astrophotography - Imaging and Processing

NA Nebula - OM1 - 200mm lens @ f4 - E200

Posted By Brad Geisler

Eric,
That is a wonderful image with an extremely large field. What was the imaging time ? Is this really FILM ?
Brad

August 12, 2010 12:48 AM Forum: CCD Imaging and Processing/Deep Sky

Latest Images, NGC 896 & NGC 869

Posted By Brad Geisler

Floyd,
You have your new imaging system up and running on all cylinders, ALREADY !!!
Great work, please keep them coming.
I guess you are already in favor of the TEC and MI combo ?
Brad

August 15, 2010 08:02 PM Forum: CCD Imaging and Processing/Deep Sky

NGC6559 TEC180FL

Posted By Brad Geisler

Now that is the way to break in a new observatory !!!
Great image from a great scope. Very nice.
Got any pics of the observatory posted ?
Brad