A big light

Sky at Night Magazine - - FIRST LIGHT -

For this re­view, we were kindly loaned an Ethos 21mm 100° eye­piece and a Par­ra­cor cor­rec­tor by the Widescreen Cen­tre. We found the 21mm and Star­Gate 500P an ideal com­bi­na­tion. With it we ex­am­ined a win­ter favourite, the Orion Neb­ula, and were bowled over with the amount of faint neb­u­los­ity and de­tail we could see – so much so that we cou­pled our Canon EOS 50D DSLR to see what we could cap­ture. This is an al­taz sys­tem and does not fol­low the stars in an equa­to­rial mode, so ex­po­sures must be short to avoid field ro­ta­tion. Even so, we cap­tured many tar­gets with just 10-sec­ond ex­po­sures, such as the Whirlpool Galaxy, M51, at ISO 2000, and the Orion Neb­ula at ISO 800. Chang­ing to our GPCAM2 290C, we cap­tured the heart of the Orion Neb­ula and trapez­ium stars with 1/3-sec­ond ex­po­sures and stacked 200 frames to give a very sat­is­fy­ing re­sult. Over­all, we had to con­clude that this sys­tem is also a ca­pa­ble as­tropho­tog­ra­phy in­stru­ment too.

Top: The Orion Neb­ula taken with a Canon EOS 50D DSLR Bot­tom: The Trapez­ium taken with a GPCAM2 290C

Newspapers in English

Newspapers from UK

© PressReader. All rights reserved.