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.
Jupiter with 3 moons Europa, Io, & Ganymede, The GRS (Great Red Spot) was getting ready to go around the Limb, the 4th Moon Callisto was way off the field of view!
The Great Red Spot (GRS) is a persistent anticyclonic storm, 22° south of Jupiter’s equator. observations from Earth establish a minimum storm lifetime of 350 years.
The GRS winds speeds top out at about 400mph.. and is 2 to 3 times the size of the Earth!
I tested out the ZWO 224MC single shot color camera on my 8inch SCT to see what it can do, …Seeing was okay at prime focus, but any magnification you could see the Earth’s atmosphere boiling. so will try to Barlow it up on the next night of stable seeing.
Caldwell 38 or NGC-4565 Edge on Spiral Galaxy, shining at magnitude 10.4,it is located at 30 to 50 million light years away in the direction of the constellation of Coma Berenices. Nick named the “Needle” Galaxy due its thin edge on profile. It was discovered by Sir William Herschel in 1785.
The central bulge of NGC-4565 is thought to have about 240 globular star clusters hovering around it, far more than our own Milky Way Galaxy.
The really cool thing is that if we were to back away from our own Milky Way galaxy and go about 50 million light years out and then look back we would look similar to this galaxy. The NGC4565 Galaxy is even more luminous that Andromeda, but is about 25 times more distant.
The smaller spiral galaxy to the upper left is NGC-4562, and there are several other little galaxies visible in the background as well.
NGC-4565 Certainly is one of my favorites to look at in my telescopes.
I captured this image from my backyard in the city of Dayton, Ohio with my Celestron 6 inch Newtonian Telescope, & ZWO ASI 174MM Cooled monochrome Cmos Camera with a 2 hour exposure.