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27 files, last one added on Dec 04, 2016


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A Tale of Two Stars1477 viewsHere are basic spectra from two familiar stars in the night sky. Vega's spectra is on the left and basically has weak spectral lines based mostly on the Hydrogen Balmer series. This is indicative of a fairly young, hot star. Betelgeuse's spectra is far more complex. We can see spectral lines for Barium, Calcium, Iron and Magnesium and compounds like Vandium Oxide and Titanium Oxide indicative of a star near the end of its life. Data collected with amateur equipment and processed through RSpec software.
Saturn1173 viewsSaturn taken with a Takahashi Mewlon 300 Dakin 2.4x barlow and an Imaging Source DBK21AU618 OSC camera from Mayhill NM (2600 stacked images using Registax 5.1). Saturn lies about 900 million miles from Earth. It's disk measured 17.9 arc sec at its equator (with rings 40.6")
Antares, M4 and the Rho Oph cloud1489 viewsAntares is the bright star at the lower left of the image. It is over 700 times the diameter of our Sun. Globular cluster Messier 4 is seen on the lower right. The Rho Ophiuchus cloud complex is the closest star forming region to our solar system (~430 lght years away). The cloud complex is much larger than can fit in this image. Blue reflection nebula IC 4605 seen about mid-left, and IC4603 seen middle-top are created by interstellar dust. Borg 71FL astrograph with a modified Canon XS DSLR 36min exp.
IC 1275 region1497 viewsIC (Index Catalog) 1275 is an emission nebula located within a rich star field in the constellation Sagittarius. The red color is due to ionized hydrogen gas (HII regions) being excited by nearby stars. Image taken through a Borg 71FL and modified Canon XS DSLR (two hour exposure, stacked with Nebulosity and processed in Photoshop).
Crater Copernicus1135 viewsCopernicus is a 93 km (57.7 miles) wide crater located in eastern Oceanus Procellarum. It is estimated to be about 800 million years old and is nearly 3.8 km (2.35 miles) deep (over twice as deep as the Grand Canyon!). Image taken using a 6" SCT at f20 using an Imaging Source DMK41AU02 camera.
Mare Nectaris/Theophilus crater1445 viewsThe Sea of Nectar (Mare Nectaris) is a small lunar mare located on the eastern edge of the Moon. Theophilus is the prominent lunar impact crater that lies slightly off center of the image to the left. Theophilus is over 60 miles in diameter and is 14,000 feet deep. The small crater in Nectaris near the top of the image is Rosse and is only 7 miles across. Image taken with a 6" SCT at f20 using a DMK 41AU02 camera through a Lumicom 656 nm filter.
The Red Rose1439 viewsSh2-275 is also known as the Rosette nebula and is a star forming region in the winter sky. Ionized hydrogen gas gives it a red color. The Rosette is about four times the size of the full Moon and is approximately 5200 light years away and about 130 light years in diameter. Open cluster NGC 2244 is located near the center of the nebula. Taken with an Orion 100ED f/9 telescope and modified Canon 1000D camera, 60 min exposure.
The Active Sun in Hydrogen Alpha1266 viewsThis image was taken through a 40mm Coronado PST of the Sun on 12/27/2011 at 1925UT. The photograph is centered on the hydrogen alpha emission line at 656.28 nanometers (nm) and shows the chromosphere. Active Region 1384 is the dark region near the center of the photograph. A very large prominence is seen erupting along the rim of the Sun on the right.

Last additions - Coolrocketdude2's Gallery
AR26151017 viewsActive Region 2615 has rotated into view on the Sun on 12 Dec 2016. It measures some 68,000 miles (110,00 km) end to end. Image taken using a Stellarvue 80mm f7 refractor, Daystar sodium Quark at 588.995 nm (D1 line) and Imaging Source 41AU02 camera. Processed using Registax 6.0 Astra Image 3.0SI (for Lucy Richardson deconvolution) and Photoshop V7.0.1. Dec 04, 2016
Jupiter with Io and Europa1173 viewsJupiter was at opposition on Feb 6, 2015. In this image Jupiter is framed by its moon Io (L) and Europa (R). Image taken with a Celestron 6"SCT at f25 using an Imaging Source 21AU618 color camera. Stack of approx 2700 images using Registax 5.1, Lucy Richardson deconvolution, and Photoshop 7.0.1.Feb 10, 2015
Saturn1173 viewsSaturn taken with a Takahashi Mewlon 300 Dakin 2.4x barlow and an Imaging Source DBK21AU618 OSC camera from Mayhill NM (2600 stacked images using Registax 5.1). Saturn lies about 900 million miles from Earth. It's disk measured 17.9 arc sec at its equator (with rings 40.6")Jun 29, 2014
The Lagoon Nebula1185 viewsThe Lagoon Nebula (cMessier 8 or M8, and as NGC 6523) is a giant interstellar cloud in the constellation Sagittarius. The Lagoon Nebula is estimated to be between 4,000-6,000 light years from the Earth. The nebula contains a number of Bok globules (dark, collapsing clouds of proto-stellar material). Imaged using a 100mm F7.2 refractor (112 min) and Hap Griffin modified Canon 1000D DSLR (ISO 800).May 01, 2014
Solar Upheaval1083 viewsThe last few weeks have seen the emergence of several large sunspots as solar maximum peaks. Active Region 1967 is wider than the planet Jupiter and its primary dark cores are big enough to swallow Earth many times over. This image was taken in Calcium-K (393.4 nm) from Alamogordo, NM using a 90mm refractor at f20, and Lunt B1200 Cak module and Imaging Source 41AU02 camera. Feb 03, 2014
A Galactic Rose1218 viewsThe Rosette nebula (Sh2-275) is a large molecular cloud in the constellation Monoceros. The nebula is about 4-6 times the size of the full moon in our night sky. The cloud is mostly comprised of hydrogen gas and is illuminated from the group of hot, young stars near its center. The nebula lies some 5200 light years from the Earth. This image was taken from Alamogordo NM using a 100mm f7.2 refractor and a modified Canon 1000D (XS) DSLR.Feb 02, 2014
Who Needed ISON?1114 viewsWhile Comet ISON evaporated while going around the Sun, Comet Lovejoy (C2013 R1) is putting on a show in our morning sky. It is visible low in the NE before sunrise. This is a 4 min exposure through a 100ED refractor at f7.2 with a modified Canon 1000D at ISO 800. The green color is most likely the result of outgassing of primarily diatomic carbon from solar heating. C2013 R1 was discovered on 9/7/2013 and will make its closest approach to the Sun on 12/22.Dec 08, 2013
The King of the Planets1242 viewsJupiter is visible in the early morning almost directly overhead in late September/early October. Larger than all the other planets combined, its only 1/1000th the mass of the Sun. The bands visible in the atmosphere are due to upwelling compounds whose exact nature is not quite known. Ultraviolet light from the Sun caused the compounds brown, orange and other colors. Imaged taken using a 5" SCT at f25 (~3750mm) using an Imaging Source 21AU618 color camera (1/45 sec exp, 3316 fr cap/2875 stacked /90% qual)Sep 29, 2013