this is a 2xH filter + 1xG filter + 2xB filter + 1xL filter 900 seconds exposures with the takahashi sky90 apo with a sbig st8xme telescope number 1 of the skylive network. Stacking done with Astrobuffer, just a little color calibration with gimp.

Exposures and elaboration by Franco (nextime) Lanza

astronomia, nebulas, nebulose, skylive

Here is the  light curve of a transit of the exoplanet XO-3b, done by analyzing in comparative photometry 200 exposures with r filt, 2×2 binning and 45 sec of exposure, 10 mediated dark frames, 10 mediated flat frames, all done from the skylive telescope number for. The seeing was measured as 1.5 at 3×3 binning, the exposures are a little out of focus cause in hour experience with this telescope can help to get better (more precise and sensible) results in photometry.

Exposures done from 16:30 and 20:00 UT Time yesterday, 9 january 2010.

Exposures done by: Ivan Bellia, Franco Lanza, Aldo Pucciarelli

Data reduction: Ivan Bellia

Here the resulting light curve:

XO-3b transit light curve

Here the field of view used for retriving data:

Field of view of XO-3b

astronomia, skylive

This is an average of 5 images on H band with 900 exposures from different time/users of skylive telescope number 6, elaboration with skyliveNG by Franco Lanza

NGC2070 from skylive telescope 6

astronomia, nebulas, nebulose, skylive

This is a fast average of 6 exposures of m51 in different days during end of 2008 and first quarter of 2009, from misc skylive users, average done by Franco Lanza with skyliveNG, only in black and white ( L filter only exposures )

M51 from skylive telescope 4

astronomia, galassie, galaxy, skylive

An RGB shot of NGC5128 from the skylive telescope number 6 composed by 1×900 sec for each channel R, G, B, L, single exposure. Exposures by Steven Williams, elaboration by Franco Lanza

NGC5128 from skylive telescope #6

astronomia, galassie, galaxy, skylive