Short exposures and lucky imaging Astrophotography by Peter Bresseler

Welcome to my Website

Most of my astrophotography time is spend on deepsky imaging using lucky imaging techniques, this means short exposures in the range of 500 ms to 5 seconds per sub. With short exposures you do not need an expensive mount, auto-guiding is also not needed and the frames you take are often sharper. I can not take images more than 2 - 3 hours per session, because at home I have a limited field of view due to large trees and houses of neighbors...it is my little challenge.

Latest Results

Arp 104, also known as Keenan's system, is entry 104 in Halton Arp's Atlas of Peculiar Galaxies catalog for spiral galaxy NGC 5216 and globular galaxy NGC 5218. The two galaxies are joined by a bridge of galactic material spanning 22.000 light years.
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Arp 224 or NGC 3921 is a interacting galaxy in the northern constellation of Ursa Major. Estimates using redshift put the galaxy at about 59 million light years (18 megaparsecs) away. It was discovered on 14 April 1789 by William Herschel, and it was described as "pretty faint, small, round" by John Louis Emil Dreyer, size 2.1 × 1.3 arcsec, 13.10 mag.
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Mayall's Object, VV32 (also classified under the Atlas of Peculiar Galaxies as Arp 148) is the result of two colliding galaxies located 500 million light years away within the constellation of Ursa Major. It was discovered by American astronomer Nicholas U. Mayall of the Lick Observatory on 13 March 1940, size 0.6 x 0.5 arcsec, 15.0 mag.
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Messier 87 (also known as Virgo A or NGC 4486, generally abbreviated to M87) is a supergiant elliptical galaxy in the constellation Virgo. One of the most massive galaxies in the local universe. The core contains a supermassive black hole (SMBH). The jet of matter is ejected from M87 at nearly the speed of light, and stretches 1.5 kpc (5000 ly) from the galactic core.
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Messier 82 (also known as NGC 3034, Cigar Galaxy, M82 or Arp 337) is a starburst galaxy approximately 12 million light-years away in the constellation Ursa Major. A member of the M81 Group, it is about five times more luminous than the whole Milky Way and has a center one hundred times more luminous than our galaxy's center. The starburst activity is thought to have been triggered by interaction with neighboring galaxy M81.
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Andromeda's Parachute is a bright Quadruply Lensed Quasar at z=2.377 and located in constellation Andromeda with a size of only 3 arcsec. J014709+463037 was discovered by PAN-STARRS June 2017
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Perseus A Galaxy Cluster - it shows the gravitational relations, tidal forces and interactions of the individual galaxies and the galaxy cluster, imaged with Celestron RASA C11
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NGC 3718 galaxy group, imaged with Celestron C11 RASA
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NGC 7027 planetary nebular, imaged with Celestron C11 RASA
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J014709+463037 or Andromeda Parachute, imaged with Celestron C8 f/5
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Equipment

The Celestron RASA 11" f/2,2 Rowe-Ackermann Schmidt Astrograph is a dedicated instrument, it can only be used at f/2.2 like a Schmidt-Camera. The RASA C11 is not a lightweight, it has a tube weight of 43 lbs (19.5 kg).


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Techniques

lucky imaging

Lucky Imaging is an effective technique for delivering near-diffraction-limited imaging on telescopes.


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exoplanet detection

The most successful type of data collection by the amateur is the transit method. As a planet passes over the portion of the star facing us, the light curve of the star drops for a time. As the planet passes through, the light curve returns to normal.


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high resolution imaging

You can further improve resolution of your images by improving your FWHM.


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