Canon EOS 700D (700Da)
astro-modified DSLR-camera for H-alpha (656,28 nm)
With professional hot pixel removal
Advantages of our astromodification
- Increased sensitivity for H-alpha (656.28 nm) - 4x more sensitive than the original
- Perfect for long exposures of emission nebulae
- Canon 700D is our customers' most popular full-frame cameras
Astrophotography is a special field of photography that deals with the capture of celestial objects such as stars, planets, moons, nebulae, galaxies and other astronomical phenomena. It combines the art of photography with the demands and challenges of astronomy.
Here are some important aspects:
Technical basics
Long exposure times: Astrophotography often requires long exposure times to capture the faint light from distant stars and galaxies. Good camera stability is crucial to avoid camera shake.
Specialized equipment: In addition to a good camera (often DSLR or mirrorless cameras), telescopes, tracking systems (which compensate for the movement of the earth) are also helpful.
Our modification of the camera
The sensor of a Canon DSLR consists of several optical filters, including the phaser layer infrared-absorption glass filter responsible for blocking the H-alpha rays. We remove this filter in our workshop using clean room technology and adjust the flange focal distance of the sensor according to Canon criteria so that the sensor continues to capture the image in all corners with accurate autofocus up to infinity.
The image (1) shows the sensor of a Canon EOS 1000D. The sensor contains, among other things, the phaser layer infrared-absorption glass filter (4). After removing this filter, the sensor (5) remains protected by the top low-pass filter (2). The sensor cleaning system is located on this filter - a piezoelectric element that shakes the surface at high frequency and thereby repels any dust particles. This is what the converted sensor, modified for astrophotography, looks like (6). The sensors of the other Canon EOS cameras are constructed in the same way as the sensor of a 1000D.
Our modified cameras have more than four times the sensitivity in the H-alpha line and more than six times the sensitivity in the sulfur II line compared to the standard model.
In the images you can see the galaxies M51 and M31 (Andromeda Nebula) as well as the Elephant and Rosette Nebula, which were taken with a Canon 1000D (© Michael Auster) and Canon 1100D (© Uli Klein) modified by us. If you would like to see more inspiring images of the depths of the cosmos from Uli, with information about the telescope and exposure time, enter "astro-uk0.webnode" in your browser search.
Types of astrophotography
Wide-angle shots:
This form of photography shows large parts of the sky and is good for taking pictures of star fields, the Milky Way or northern lights. A wide-angle lens and a stable camera mount are the most important pieces of equipment here.
Deep-sky photography:
This involves photographing distant objects such as galaxies, nebulae or star clusters. A telescope with a camera is usually used for this. The exposure times can be several hours.
Planetary and lunar photography:
This type involves photographing close objects such as the moon or planets. A long focal length is important in order to be able to capture the details of the celestial bodies in sharp focus.
The H-alpha rays, which are at the edge of the range just visible to the eye at 656.28 nm, can be recorded with an unmodified camera, but this requires significantly longer exposure times. By removing the blocking filter, the spectrum of the camera is expanded to 700 nm, meaning that the rays in the H-alpha range can reach the sensor unhindered with shorter exposure times. You work with shorter exposure times and can take more pictures in the same amount of time compared to an unmodified camera, the number of which is important for later stacking.
Astro camera for photography during clear nights but also for normal shots
An astromodified camera can still be used for daylight photography. To do this, you either perform a manual white balance or screw a UV-IR cut filter onto the lens that has the optical properties of the removed blocking filter. There are clip filters on the market that insert the phaser layer infrared-absorption glass filter removed during astromodification into the mirror box in front of the sensor.
You can have your camera modified by us
If you have a Canon camera, you can have it astro-modified by us. Check out our offers for this special conversion service.
Our references
Hundreds of our customers have left reviews on Ebay for over 13 years, that we are proud of. Those who know DolphinDOS for Commodore C64 can rely on the technical experience of the owner of eifelcam and thedolphin.shop, co-inventor of the floppy speeder.
Scope of delivery
- Canon EOS 700D body
- Original Canon charger LC-E8
- Akku LP-E8
-
USB-cable
2 years warranty
Used in good cosmetic condition and 100% technically flawless
The photos shown are for illustration purposes. The cameras for sale are in perfect technical condition (100%) and in good cosmetic condition (rated 2.0-2.5 on a scale from 1 to 5). As these are used items, the sale is subject to the margin scheme according to § 25a UStG, and VAT cannot be separately stated on the invoice.
Technical specifications and further information
If you are interested in the exact technical specifications of the Canon 6D, please visit the manufacturer's website. There you can download the comprehensive instruction manual as a PDF. Excellent information can be found on numerous online forums.
