Image of 3hrs and 38m taken in subs of 1 and 2 minutes.
Esprit 120, ASI2600MC Gain 100, F7, EQ8 ; stacked in AstroPixelProcessor and developed in Photoshop.
The sky was very foggy, sqm around 20,15.
When scanning for little galaxies, several very small galaxies were identified using SIMBAD at apparent magnitudes below 20. As an example:
2MASS J09533544+6908169 Type: IR<10um Mag: 20.62
M81 and M82 on January 5th (first processing)
These are the measured currents that the equipment draws, mount without equipment mounted (bare mount). The 12V DC converter used, was a 3,7A AC/DC converter that originates from a Wii gaming console.
I measured the current required for the divers equipment I’m using:
Equipment or combination Current in Ampere Only stand-by LED’s from dew control and power distribution box 0.03A Switch on the EQ8 0.47A Siderial rate on 0.50A Slew at rate 9 in RA 2.05A Slew at rate 9 in Declination 2.00 A Combined RA and Decl slew at rate 9 3.15A Slew at rate 7 in RA 1.7A Slew at rate 7 in Declination 1.7A Slew at rate 3 in RA 0.55A Slew at rate 3 in Declination 0.55A EQ8 at siderial rate and dewcollar full charge of the C11 1.9A Only Dewcollar C11 1.42A Dew collar APO120mm only 1.10A Small dew collar for guiding scope 50mm 0.52A EQ8 siderial rate + dew collar APO 2.04A idem + slew in declination rate 9 3.44A above + slew in RA rate 9 (as well as decl) 4.6A Converter overloaded, halted ASI184MM Pro cooler at 94% 1.9A above + EQ8 Siderial 2.24A above + slew in RA Decl rate 9 3.9A Converter overloaded, halted
This galaxy is the third member of the Leo triplet. During the last nights I could image this with the Esprit120mm and the ASI183MM Pro. This intermediate result is L-filter 6hr36m of data processed in APP and cropped. Best seen by clicking on the image!
NGC3628 ASI183mm Pro + Esprit 120mm + SW Flattener + No Reducer, No Filter
And below is the equivalent image taken with the Nikon D750 DSLR. I had a lot of noise in this 3hrs picture (36x300s), I suspect something went wrong with the dithering. The tidal stream is just visible.
Continue reading “An intermediate NGC3628”