Tag Archives: Moon

Sinus Iridum or Bay of Rainbows

Driving across “The Bay of Rainbows”

Sinus Iridum  aka the “Bay of Rainbows” is a plain of basaltic lava in the Northwestern portion of Mare Imbrium on Earth’s moon.
It is surrounded by the rugged Mountain Range known as Montes Jura.

Sinus Iridum was formed from the remains of a large impact crater, which was then flooded with basaltic lava, inundating the “sea” wall.
The Bay of Rainbows spans 236km or 146.64 miles across.

If you were to drive across the Bay of Rainbows at 60mph, (assuming no crater sized potholes, LOL!!) it would take ~ 2 hours and 26 minutes.
Roughly the distance from Dayton, Ohio to Versailles, Kentucky, or Dayton, Ohio to Nashville, Indiana.

This bay and the surrounding mountains is considered one of the most beautiful features on the Moon, and is a favorite among lunar observers.
It is one of the features on the Moon that can be seen with the unaided eye.

C8 Telescope & ZWO ASI 224MC Color Camera, 600 frames stacked in Registax 6, at my backyard observatory in Dayton, OH.

Best Regards,
John Chumack

6 Planets Align & Moon

Everyone is talking about the 5 Planets Aligning in the Morning sky,
But I Captured 6 Planets!!! You have to count the Earth too! LOL!!! Earth provides us this perfect view of the Planets Aligning along the Ecliptic..
The Moon joined these Planets at Dawn last Saturday Morning 01-30-2016 at 6:13am E.S.T. from just outside of Warrenton, Virginia. I included the Earth #6 in this slightly cropped fish-eye Lens shot. Canon 6D DSLR & 8mm Fish-eye Lens, ISO 800, 8 second exposure. Just before the clouds started interfering…

I included an illustrated view to help you all ID them, as well as 3 of the brightest stars. you may also recognize the Constellations of Scorpius, Virgo, Libra, and Corvus are easily visible too. Mercury is a challenge as you have to catch it just before dawn gets too bright! You can see Mercury, Venus, Saturn, Mars, & Jupiter with your eyes only, no telescope needed, just use my diagram to help you find them over the next week or so. Look between 6:00am and 6:45am.

Note: depending when you look the next 2 weeks, the moon will not be there or may not be in the same place, as it moves 12 degrees every day.

Best Regards,
John Chumack

The Crescent Moon with Earth-shine

Okay,  here is a little something for all you Moon Lovers out there!!!
The Thin Waxing Crescent Moon with Earth-shine and the Star above the Moon is 5th magnitude star 110 Omicron Piscium, the moon was moving through the Constellation of Pisces just before setting below the Mountain top on 03-21-2015, Sorry Mars had already set by the time I grabbed this shot..Earth-shine is the normally unlit portion of the moon, in this case Earth is reflecting light and illuminating the backside or non Sunlit portion of the Moon, you can even make out the Maria or Features on the Earth-shine portion of the Moon.

Canon 6D DSLR & 60 to 300mm lens set to 225mm, 1 second exp. Chena Hot Springs Alaska

The Lunar Edge – The Southern Highlands

On the Lunar Edge!

Edge of the Southern Lunar Highlands,
Clavius Crater at Bottom…
One of my Sharpest Southern Highlands shots to date!
Craterlets galore! Zoom in a bit to see the tiny craterlets!

The Southern Highlands terrain has many craters larger than 45 km in diameter.
Back in the 1970’s counts have been made of small (km sized) crater
number densities in limited areas of the southern lunar highlands,
in order to investigate the nature of the anomaly for large craters in this area. The anomaly is found to be detectable in this size range also,
supporting the hypothesis of it being of a cometary impact origin.

Lunar Highlands are very different from Maria in more ways than visually obvious.
Radioactive dating of lunar samples of both types of surface tell the same tale as the cratering record: rocks from the highlands are mostly around 4 billion years old, with the oldest being about 4.4 billion years, while maria rocks date
from 3.1 to 3.8 billion years old, about the same as the oldest terrestrial (Earth) rocks.

Captured from my backyard in Dayton on 11-02-2014
QHY5IIL Camera, Prime @ F6.3, 10″ SCT scope
5.6 ms exposures/15 FPS Full Res 1280×960 (3.7micron Pixels)
Best 65% of 600 frames Stacked in Registax 6.

Best Regards,
John Chumack

Impact Craters Tycho & Clavius

COLO has been busy!!!
The Chumack Observatory Lunar Orbiter…LOL!!! Okay not really an orbiter, but I can get very close-up detailed shots!
My backyard Observatory has made another pass over the Lunar Terrain, this time closing in on Tycho & Clavius (multiple impacts within the crater itself)!!!
I’m always looking for nights were I can improve on the resolution from the previous shots!
This week I will be posting some of my Sharpest images of the Lunar surface taken just this past Sunday evening from my backyard observatory in Dayton, Ohio!!!
Dodging Contrails and High Cirrus clouds…shooting in the clear spots.
Lunar Impact Crater Tycho & Clavius on 11-02-2014 @18:56.21 E.S.T.
QHY5IIL Camera, Prime @ F6.3, 10″ SCT scope
5.6 ms exposures/15 FPS Full res 1280×960 (3.7micron Pixels)
Best 65% of 400 frames Stacked in Registax 6.

Best Regards,
John Chumack

The Blood Moon – Total Lunar Eclipse 10-08-2014

Blood Moon

Total Lunar Eclipse

October 08, 2014

Only during a Full moon can a Total Lunar Eclipse occur. This happens when the Earth’s shadow covers the moon, thus a perfect alignment of the Earth between the Moon and the Sun is needed. When this alignment occurs the moon can become deep red/orange during the totality part of the eclipse. The light from the sun enters earth’s atmosphere and bends around the curvature of the earth scattering all the blue light, but passing the red wavelengths of light which illuminate the moon during lunar totality. This Eclipse was second eclipse of 2014, part of a rare Tetrad,  4 Lunar Eclipses in two years. We will have two more Lunar Eclipses in 2015.

Images captured  at Huffman Dam,  Dayton, Ohio.

Canon 6D & 80mm telescope, ISO 800 to 6400, 1/400 sec to 2 sec exposures, to capture all these eclipse phases.

The moon is the only natural satellite of the Earth and the nearest celestial body in space.
© 2014 John Chumack


Copernicus Impact Crater & Ejecta Rays

Copernicus Crater Named for Nicolaus Copernicus, the Crater is 93km or 58 miles across, that would be like a crater stretching from Dayton, Ohio  to Cincinnati, Ohio.  Copernicus Crater is  3.8km or 2.4 miles deep and has a relatively young and easily visible ejecta ray pattern.

The crater rays spread as far as 800 kilometers or  500 miles across the surrounding mare, that is about twice the width of the State of Ohio, and overlying rays from the craters Aristarchus
and Kepler. The rays are less distinct than the long, linear rays extending from Tycho, instead forming a nebulous pattern
with plumy markings. In multiple locations the rays lie at glancing angles, instead of forming a true radial dispersal.

Nicolaus Copernicus was a Renaissance mathematician and astronomer who formulated a heliocentric model of the universe
which placed the Sun, rather than the Earth, at the center.

I captured this close-up from my backyard observatory in Dayton, Ohio.

Image Details:
Lunar Impact Crater Copernicus on 05-10-2014

Canon Rebel Xsi DSLR Camera, 2x barlow, & 10″ F6.3 sct scope
ISO 400, 1/50 sec. exp.

Best Regards,

John Chumack



Triangle around the Moon on 05-12-2014!

There was a Triangle in the sky around the Moon last Night 05-12-2014 over my neighborhood in Dayton, Ohio!!!!

I used my Canon Rebel Xsi & 8mm fisheye lens to Capture this 8 second exposure, A Triangular pattern created by the Bright Star Arcturus(top) and the Planets Mars(right) & Saturn(left). The Moon & Spica are located at the base of the Triangle.  A Cool looking pattern last night around the Moon!! The Planet Mars was about 21 degrees to the right(West) of the Moon and Saturn was about 19 degrees to the left(East) of the Moon at around 10pm last night.

Keep watching as the Moon is always moving, and tonight 05-13-2014 the Moon will glide within 1 degree of Alpha Libra or Zuben El Genubi and by morning (5:00am)to within a few degrees of the Planet Saturn!

Best Regards,

John Chumack