Two beautiful nebulae in Orion. They lie beside the left-hand star in Orion’s belt. Ive always wanted to see the Horsehead but it is too dim for my telescope.
This image was taken with a Canon 60Da with 200mm f2.8 L lens set at ISO 800 and at f3.5. 16 x 30 second sub-exposures were stacked together to make the final image (processed in PixInsight and Photoshop).
The “rays” coming from the brighter stars are a diffraction artefact caused by the 8 blades of the iris in the lens. After some research, I found out that this can possibly be avoided by using “step down” rings attached to the end of the lens – these are used to attach smaller diameter accessories to a lens but have the effect of “stopping down” the lens. A 72mm – 65mm ring is the equivalent of stopping the lens down to f3.2 and a 72-55mm ring gives f3.6 for this particular lens.
Barnard 33, Dark nebula, Orion. Horsehead Nebula.
NGC 2023, Reflection Nebula, Orion.
IC 434, Emission nebula, Orion.
IC 431, Reflection nebula, Orion.