Tag: ngc 1499 california nebula

California nebula – 2018-11-10

California nebula

I managed to dial down the chromatic problems (astigmatism?) of my Canon EF 200mm f/2.8 L II USM, by adjusting the lens’s mount, but it’s still bordering garbage for astrophotography’s needs.

I imaged NGC 1499, SH2-220 [nebula in Per] California nebula ø160′ [wiki] [simbad] 200mm, 400mm  on 2018-11-10, with the usual wide field rig, Canon 1100D mod, Canon EF 200mm f/2.8 L II USM at f/4.5, HEQ5, acquiring 21×90 sec of light at ISO 3200. An extra is the IDAS LPS D2 clip in filter.

(tovább…)

facebooktwittergoogle_plusredditpinterestlinkedinmail

California Nebula, Pleiades Cluster

California nebula and the Pleiades

Two nebulae and a cluster – perhaps the cluster – in one frame, this is the NGC 1499 California emission nebula and the M45 Pleiades open cluster with the reflection nebula it is passing through. Parts of the complex nebula system are also visible, with a hint of the LBN 777 Baby Eagle Nebula being there too. This picture was a challenge due to less than ideal transparency, odd gradients on the sky and the approaching moonrise. My starheal program did a great job. California Nebula and the Pleiades, 10×2 min, ISO 1600, Canon 1100D mod, Canon 50mm f/1.8 @ f/3.5, HEQ5, Dângău Mare, 2016-11-20

(tovább…)

facebooktwittergoogle_plusredditpinterestlinkedinmail

NGC 1499 California Nebula

20161204_z_ngc1944_california_nebula_stack1_crop_dss1_psc_nostars075The sky allowed only very few exposures on this object, and the -8°C temperature was somewhat unforgiving. In order to cancel out a known lens error (the lens seems to be off a bit from the ideal perpendicular), I rotated the gear 180 degrees at half of the session.

Canon 1100D mod, 14×2 min, ISO 1600, Canon EF 200mm f/2.8L II USM at f/4, HEQ5, Dângău Mare

(tovább…)

facebooktwittergoogle_plusredditpinterestlinkedinmail

Jól kalibrált monitoron mindegyik számnál elkülönülő árnyalat látszik. Ha mégsem látszanak, akkor a megjelenített képek színhiányosan rajzolódnak ki. A monitort valószínűleg kalibrálni kell.

You should see distinct shades for each number. If those shades are not clearly visible, the displayed pictures will lack accuracy. Your display most likely needs to be calibrated (brightness, gamma, contrast etc.).