Jan 6, 2020
Deep-Sky Photo Session in the Backyard by amazingsky
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Deep-Sky Photo Session in the Backyard by amazingsky
Deep-Sky Astrophotography Rig Example
Here are the core components of a very capable deep-sky imaging rig. (very similar to what I use) Extras include a T-Ring adapter, Field Flattener/Reducer, Light Pollution Filter, Laptop and Software for Camera Control. An autoguiding system can be added down the road for longer exposures.
Canon Rebel T6i: http://amzn.to/2uRL2TB
Orion Sirius EQ-G: https://goo.gl/vDTAo1
Orion ED80T: https://goo.gl/XVrzDU
This is IC 1805 and LBN 667, the Double Nebula, in the constellation of Cassiopeia near the border of Perseus and Camelopardalis.
http://www.astropix.com/Double_Nebulae.html
Click on the link to see a larger version with more information.
Who says you can’t shoot faint emission nebulae with a stock, unmodified, DSLR?
It certainly is much easier to shoot emission nebulae with a modified camera, because the long-wavelength filter has been removed it passes almost all of the wavelengths of hydrogen-alpha light which give emission nebulae their distinctive color.
But you can make up for the wavelengths that get filtered out by just using more exposure. This is the price you have to pay.
A secret to being successful at this is to also use a light-pollution filter. These filters remove other wavelengths from light pollution and airglow and allow longer individual exposures that capture more hydrogen-alpha wavelengths in an individual exposure. Then you just stack a bunch of individual frames to equal one really long exposure – in this case, the equivalent of almost 5 and a half hours of total exposure in a stack of 41 eight-minute single exposures.
This image of the Double Nebulae was shot with a stock, unmodified, Nikon D5300 and a Nikkor 180mm f/2.8 lens working at f/3.46 with a 52mm IDAS LPS filter.
The Helix Nebula is one of the closest planetary nebulae, its distance is about 700 light-years only, and its dimension is 2.5 light-years approximately. The age of Helix Nebula was estimated to be...
One of the biggest of its kind in our night sky, the emission nebula which appears brighter and four times larger than Orion Nebula. Despite there are large number of globules, open clusters, dark and bright regions and even dust-pillars in it, its most interesting part is the star system which the nebula was named after, the famous Eta Carinae, the yellowish-reddish looking star in the picture.
The Cigar Galaxy emits 5 times more light than the Milky Way, although its diameter is only 1/3rd of the diameter of our galaxy. When so much energy works in so "small region", there must some extraordinary things happen. That is the case with Messier 82 too.
The Eagle Nebula, one of the favourite objects of amateur astronomers can be seen in this photo, with the Pillars of Creation in it, a formation made World famous by Hubble Space Telescope. Although the name sounds a bit pathetic, understanding the phenomena happening in those pillars can explain why that name was chosen.
The Silver Dollar Galaxy - NGC 253
The famous galaxy in constellation Sculptor is called The Silver Dollar Galaxy, but it is also known as The Sculptor Galaxy. It is the third brightest galaxy in the sky after the Milky Way and the Andromeda Galaxy.
Full resolution, more info: http://astro.i-net.hu/node/136