haste and superficiality over moisture ... these are the two words to characterize the shooting summer .. pity a few more minutes spent in planning would have improved the results ...
here is a raw of the evening ..
using the flattener has a total increased undersampling worse picture: the main subject of the photo, the crescent is a small portion of the field, the internal structures of the nebula are not resolved, this lightly .. the choice of setup has also added a listing Focus approximate quick'n'dirty ...
however rich area of \u200b\u200bthe swan of his h-alpha emission fills the bottom of shades ...
800IS Canon EOS 1000D focus of sw 80ed, WO flattener TypeII Focal length: 480mm f / 6 on HEQ5 guided sw70/500 spc900nc and GuideMaster (EOS USB plug-in) focus with Hartmann mask
light frame 17 x 420 / 2 (sum) for a total of about 2h 15 dark (median) flat 9 (median)
The evening begins shooting later, as it is every summer theater season tonight at the theater Samnite Ulderico Fish King Oedipus Very good his review of the tragedy of Sophocles, scene minimal as not to distract the audience from interpretations.
Let's go home ... it's the turn of the Pelican Nebula.
Filming starts later than usual, after 1: 30 ..
time promotes the quality of the sky: the lights are part of the country off, moisture continues to spread those
been running Object: IC 5070 LBN 350
Size: 60.0 'x 50.0' Magnitude
: 8.00
surface brightness: 16:43
Nebula in the milk away in the swan, companion of North America, mainly in H-alpha emitting its recovery without changing the reflex would was impossible ..
800IS Canon EOS 1000D focus of sw 80ed, TypeIIFocale WO flattener: 480mm f / 6 on HEQ5 guided sw70/500 spc900nc and GuideMaster (EOS USB plug-in) with focus mask bathinov
light frame 22 x 240 / 2 (sum) for a total of 88min10 dark (median) flat 9 (median)
I would have expected a bit 'more from the recovery, but the noise limits processing.
processing which consists of stretch and log-linear and reassembling the final stretch.
is the new version of the cocoon, I spend much time lately to rework, test and learn ... in fact I'm very proud of this picture my first separate processing of stars that I managed to say. The elaborazine was made entirely with PS, I am most familiar with, although less potent than maxim.
below the link to the old processing http://forestadifangorn.blogspot.com/2010/10/cocoon-nebula-ic-5146.html
and raw (which was added as a bit rough, but especially ...)
Pietrabbondante August 13, 2010 As with all other nights during this summer laying the humidity has lowered the quality of the air and the heat has strained the camera. The nebula was taken at 2:30 am at the zenith, a position he suffers a lot from my summer location of the lights of this country ... but I can give no signal (it is useless in progress relentlessly trying to bring out what there !!)... but the worst came to my surprise development which are highlighted horizontal bars from one side of the frame that have not been able to eliminate. In preparing I could try instead of the maxim that power has many filters and capabilities in more than PS.
crop. Canon EOS 1000D changed the focus sw 80ed, HEQ5 on tour with sw70/500 spc900nc and GuideMaster (EOS USB plug-in) focus mask of light frame bathinov8 x 360 / 2 (sum) 21 light frame from 300 seconds for a total of 11 dark 95min (median) flat 9 (median) preprocessing and stacking with DSS processing with Maxim PS.
Below the image with the obvious problem that has ruined the field of stars and dark nebula B158
before processing any order of the photos summer .. August 10, 2010 Pietrabbondante rather damp evening, the lights in these conditions in the country, usually discrete, light up the sky. Big news in the setup, I place great hopes in the amendment made by the reflex artes, prepared and dedicated technical and amateur astronomer. First tests with the flattener ... but that's another story, and you will tell another time (M. Ende, The Neverending Story) Canon EOS 1000D 1600ISO focus of sw 80ed, flattener WO TypeII Focal length: 480mm f / 6 on HEQ5 guided sw70/500 spc900nc and GuideMaster (EOS USB plug-in) focus mask of light frame bathinov8 x 360 / 2 (sum) for a total of 48min
dark 9 (median) flat 9 (median)
preprocessing and stacking with DSS processing with Maxim, PS two versions, the second I tried the separate processing of the stars. Third processing PS
--------------------------------------- ----------------------------------------------- Second
PS processing, an attempt to separate processing
------------------------------------ -------------------------------------------------- Before processing MaxDL moisture few poses and the error limit of the ISO setting the image perhaps overly elaborate. First tests of processing with Maxim.
Pietrabbondante evening between 17 and 18 August ... I always thought that goto had negative educational impact, or symbol of the evolution of ethics to the "everything at once" and the consequent loss of the value of could be .. a bad sign that now increasingly prefer the convenience of automatic target recognition .. but leaving aside the ethics we spend the evening observing the sky ... ... the worst in that it has observed all the more that my target is low at all 'horizon ... milkiness moisture sensitive and thus spread across the horizon sky, a color that has faded, well distant from the black winter. Add the wind ... The lens is Messier still visible but now low. M20 : just set (not a bad start) M21 : very small and concentrated cluster surrounded by four stars, not very satisfactory. M25 : very large cluster of irregularly shaped open with many bright stars on a carpet of smaller stars. M24 : unsatisfactory al'osservazione telescope M23 : very interesting cluster dominated by a star much brighter than the other M17: Nebula easy, the body is now well detached from the base of evil, it takes a bit 'more to bring up the layer of the head and neck of the swan. M16 : Observation disturbed by the very difficult field stars, the subject evanescent, I expected it easier, the first observation was not satisfactory. M18: NGC 6604 NP : cluster interesting bright stars unbalanced on one side. M26: small cluster focused seemed limited to 3 stars. M11: magnificent, dominated by a central star and two stars side at a quick glance it appears much smaller, seems to be separated into two areas. a closer look shows the real size del'oggetto. M10-M12 : batuffoletti evident but not resolved, the first slightly more the second, both appear as globules of light with a slight increase in intensity towards the center. M14: the eyepiece of the other two much more faint globular, obviously not resolved. M2: this corpuscle of light only appreciable decrease in brightness at the edges, unresolved index of bad evening, in fact, a few nights before I was able to resolve the outer stars. M15 : Same as the other M71 globular : globular interesting because they are not concentrated and the location is very nice to see this thickening on a background of stars. M27: observed object under the best skies tonight has nothing to add. M101 : bet to test the actual quality of the sky is mostly because I know it's there, so maybe only in my mind. M102 : core galaxy much brighter than in the periphery, it is not a suitable subject to heaven. The goal that I set for the evening was partially achieved, I have left a bitter taste for M16 and other objects for which the lowest I have to wait a while '... And now to prepare a list of items autumn ...
Pietrabbondante August 2, 2010 .. waiting for the camera .... there are nights when nothing works, August 2 was one of these, the three seemed to be going rather well ... everything seemed ... the problem has become evident until late evening. In selecting the object of the database recovery has helped me del'agenda Drioli, I selected a planetary nebula and bright enough that they can be taken from the webcam sc1 refurbishing for driving operations. NGC6543 (cat's eye) 0.4 'x 0.3' magnitude 8.30
webcam spc900nc sc1 focus on the sw130/900 heq5messa focus occhiometrica
light frames 93 x 15 / 2 (sigma clip) 20 dark (Median)
Acquisition with GuideMaster preprocessing and stacking with Iris processing with PS iris Below is a raw: at the end of the evening I tried to resume a globular cluster, and this is the problem of fire become apparent, not the sensor is clearly not perpendicular to the optical axis. Diagnosing the next day it was detached the camera from its case ... However, although the result seems in line with much of what you see online, are not very happy with the result the central star is a beacon, is much too large and the structure of the nebula are significantly improved.
long wait that the reflex changed ... hope that at least since the weather is clement ... night waiting for urgent plan B.. moon, modified webcam, film (in parallel)?? we'll see ... PS .. the delay in the projects is a certainty of life ...
and behold the glory of David telescope finds himself with a new neighbor .... plate flanked by two new guides the telescope sw 70/500. The double plate in reality is nothing but a TAVOLETO of ... actually I do not know what .... a very hard material and a hard multilayer coated ant like that gave me my friend .. its resistance smith is truly remarkable, the circular saw could hardly cut it. Party looking for a bar of aluminum such as "Window", the blacksmith made me fall back on this other material, the plain bars are apparently a rarity. I preferred the solution of two telescopes side by side, on the one hand optimize the weight distribution on the other hand allow me to shape one of the holes of the screws holding the drive so you can make small adjustments in dec. we'll see .. so far my tests have been already ... daytime because of mist and clouds ... the sky did not give me respite. The draft of the guide scope, need to go to fire, I built a ring of hard plastic for Hydraulic spliced \u200b\u200bwith other metal fittings hydraulic always 32mm. To avoid stray reflections, or at least mitigate them I used the duct tape and cardboard dark and obviously the screen is not optimal but it is the only functional work to be performed by driving the new 70/500 .. now have to finish just two more ... .. and the camera focusing screen ... few months ago I also cleaned up the eq2 and I've repositioned his telescope .. hopefully the pc while I take pictures I can devote myself to the observation in the company of my dog \u200b\u200bfearful lightning ...
take pictures with the camera and a telescope entry level is a challenge, mostly because of difficulties related to the frame. Focus becomes an heroic light as every touch of the focuser is an earthquake in webcam .. also overcome the problems of the sensitivity of the focuser mount may not be enough for the delicate operations focus. few little trick can help. Here's how I improved the focuser of 130 newtons.
After checking with the level that the orientation of the focuser tube was the same, I added a thin line on the graph of the focuser tube, this allows the approximate location appunatre fire with different accessories. Then I mounted a small lever on the handle of the focuser, so you can have a greater sensitivity in the movement. The basic idea is very simple, with a longer arm to the same movimeto angular displacement is a greater need. The sensitivity of fuocheggiatre in this case has increased the ratio
n = R_Man / L_Br
with R_Man : ray dela knob. L_Br length of the arm measured from the center of the knob.
It 'important that the lever readily removable so as not to permanently restrict the movements of fuocheggaitore that otherwise could not do the full tour!
Materials: - cut-out graph paper and adhesive screen - photographic film container - ballpoint pen tube
June 27, 2010 clouds prevent quaunque type of photo taken .. decide to do some testing focus. tests taken so the star Arcturus, the results are below.
Arturo, Image in fire
Arturo: Image Intra focal
Arturo Image exta focal
intra and extra focal image (resized) compared
Conclusion .. It does not present a fire stretching, the sensor is not tilted with respect to the barrel. I deleted the problem that was highlighted earlier (see the old images). The telescope would seem slightly scollimato, I'll have to adjust the collimation of the primary, even though I have my doubts about the child that unfortunately in this telescope is pasted.