Category Archives: Science

General Science

Skywatcher Star Adventurer – Review

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I demo the Skywatcher Star Adventurer!

I contacted Skywatcher about an inexpensive, but useful, mount for tracking stars for astrophotography. I wanted a mount under $500 which could hold a star “still” for photography, at 400mm focal length, for 30-60 seconds. They sent me one for free to evaluate and here it is!


1. Some plastic parts (not needed for operation)
2. Needs angled wedge and counter weight to be useful
3. Limited payload weight
4. Polaris finger scope light failed very quickly

1. Light weight, easy setup
2. VERY good unguided star tracking!
3. Heavy metal construction
4. Long battery life!
5. Polaris finder scope.
6. Lots of great knobs & parts designed to simplify use

Radioactive Toilet! Testing the Hot Seat!

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Is your toilet slightly radioactive? Maybe.

Spectrometer used was the GS1100A from:

Geiger counter used was the Inspector USB from:

Toilet was likely from a hardware store lol

I found Uranium 238, Thorium 232, and Potassium 40 in my toilet. These are normal to find.

☢ Trinitite: Nuclear Glass! ☢

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Radioactive nuclear Trinitite: Sand from the deserts near Alamogordo NewMexico melted into glass by the fires of the first atomic test!

All photos and video are copyright and made by other than the photo of the trinity test, which is public domain (copyright free) and originally shot by Berlyn Brixner

Two places to get trinitite samples:

Special thanks to MP!

How to Photograph the Moon!

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How to photograph the moon using a simple DSLR camera!

The most important things:

DSLR Camera capable of fully manual settings.
Telephoto or Zoom lens of at least 200mm focal length.
Low ISO (100 to 400)
High f/stop (6-10)
High Shutter Speeds (1/250s or faster)
Stable Tripod
Shutter Release

Astrophotography Photos

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The Moon

Moon, Canon Rebel T5, 80x400mm Arco Orion ST80, f/5, 1/320s ISO200, © 2016

Orion Nebula

Orion Nebula, Canon Rebel T5, 80x400mm 2x Barlow Arco Orion ST80, f/10, 15s ISO6400, © 2016

M41 Open Cluster

M41 Open Cluster, Canon Rebel T5, 80x400mm Arco Orion ST80, f/5, 6s ISO1600, © 2016