Search found 83 matches

by tilvi
Tue Jul 12, 2005 3:46 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: "Play last 24 hour movie"
Replies: 0
Views: 3826

"Play last 24 hour movie"

The hyperlink on home page "Play last 24 hours movie " doesn't seems to work.
Sometimes the followed link (http://nightskylive.net/worldmap/wm-movie.gif) says that it contains errors while some time it doesn't say anything.
Is this error due to cloud overlaying or is it a software bug?
by tilvi
Tue Jul 12, 2005 2:34 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Labeling on JPG images
Replies: 1
Views: 3850

Labeling on JPG images

Each CONCAM (.jpg) image is labeled with a time stamp and other information on the corners of the image. But sometimes it is hard to see these labeling especially the time stamp as in case of Hanle station ( blue letters on black background). http://nightskylive.net/ha/ha050709/ha050709ut215648p.jpg...
by tilvi
Mon May 09, 2005 5:17 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Rho Pup variability found
Replies: 1
Views: 4033

Tau & Eta Pup using canonical frames

following are the plots for the Tau & Eta Puppis which are constant stars according to alcyone.de This plot shows Delta Mag Vs Truncated Julian Day (TJD). The magnitude change is within 0.1 m http://www.phy.mtu.edu/~vpshetti/nsl/summer/tau-can.jpg This is same as the above plot except that here ...
by tilvi
Tue Apr 19, 2005 4:42 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: whats this?
Replies: 3
Views: 6033

whats this?

Image
by tilvi
Mon Jan 10, 2005 8:42 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: comet machholz
Replies: 0
Views: 3370

comet machholz

The below GIF shows the comet Machholz on Jan 09, 2005 at HL station.

Image

Below is large file
http://www.phy.mtu.edu/~vpshetti/nsl/09comet.gif
by tilvi
Sat Jan 01, 2005 9:55 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Finding Comet Machholz
Replies: 5
Views: 7146

comet movie for 3 nights

Heres the comet movie for 3 nights at Cerro Pachon on 19, 20 & 21 Dec.
Comet marked with the arrow. (file size is around 2.3 MB)

http://www.phy.mtu.edu/~vpshetti/nsl/comet.gif

Image
by tilvi
Tue Dec 28, 2004 6:09 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Find the Perseid
Replies: 27
Views: 26423

composite of Perseids 2004

Here is the composite of few meteors during Perseids 2004.
http://www.phy.mtu.edu/~vpshetti/nsl/perseids2004.jpg

Image
by tilvi
Thu Dec 23, 2004 7:36 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Perseids light curve
Replies: 0
Views: 3459

Perseids light curve

Below are the attached Perseids 2004 light curves (with error bars), we wish to present for the poster session for AAS. Begining with faint meteros to bright meteor light curves. We can see the light peak change from almost symmetrical light curves for faint meteors to light curves having peak at th...
by tilvi
Thu Dec 23, 2004 5:49 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: AAVSO photometry discussion
Replies: 0
Views: 2783

AAVSO photometry discussion

Here is the link to AAVSO's photometry discussion archives.
http://mira.aavso.org/pipermail/aavso-photometry/
by tilvi
Wed Dec 22, 2004 9:06 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Which satellite is this?
Replies: 193
Views: 199591

Is it the asteroid in the above images?

A recent release from space.com that a "Small Asteroid Passes Between Satellites and Earth "
http://space.com/scienceastronomy/aster ... 41222.html
by tilvi
Mon Dec 20, 2004 7:07 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Finding Comet Machholz
Replies: 5
Views: 7146

Probably Comet Machholz

Probably this is the comet machholz, circled in black from MK station
also the map of this comet's path is here.

http://encke.jpl.nasa.gov/images/04Q2/q2-2.gif

http://www.phy.mtu.edu/~vpshetti/nsl/comet.jpg
by tilvi
Sun Dec 12, 2004 2:03 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Geminids 2004
Replies: 13
Views: 8479

Geminids 2004

A bright meteor looks to be originating from Gemini constellations. http://nightskylive.net/hl/hl041208/hl041208ut124451p.jpg http://nightskylive.net/hl/hl041208/hl041208ut124451p.jpg http://nightskylive.net/hl/hl041208/hl041208ut153819p.jpg http://nightskylive.net/hl/hl041208/hl041208ut153819p.jpg
by tilvi
Wed Nov 17, 2004 6:43 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: NSL Comparison of Observing Sites
Replies: 7
Views: 6000

Vic Muzzin wrote:Matt and I have recreated the movie files for january, they are now available online. Once everyone has used these files we will delete them and create the movies for Feb.
Hey Vic,
where these movie files are located?
by tilvi
Mon Nov 01, 2004 5:48 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Meteor trajectory
Replies: 11
Views: 9770

Lior,
This calculations looks very promising. This would be really helpful in finding atleast approximate location of a meteorite fall on the earth. This would be another vantage point for NSL.

Did we hear anything about the "cosmic trail", detected in one of the dark frame?
by tilvi
Tue Oct 26, 2004 4:14 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: A special cosmic ray hit
Replies: 6
Views: 5050

Tilvi, Indeed this is a dark frame. That is why I think it is not a meteor. Dark frames do not have jpgs on the server, but you can examine the FITS file itself at: http://nightskylive.net/mk/mk041016/mk041016ut093141D.fits The FITS image is even more impressive than the JPG. Examining the FITS fil...
by tilvi
Mon Oct 25, 2004 6:07 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: A special cosmic ray hit
Replies: 6
Views: 5050

Lior, If this is a cosmic ray and not instrument fault, then its really inteteresting. Can be a discovery. Because it looks like that this cosmic ray source is really moving so fast and giving out such cosmic hits, which resembles a moving meteoroid. I assume that this FITS file is a Dark frame whic...
by tilvi
Fri Oct 22, 2004 2:08 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Science with NSL data
Replies: 0
Views: 1590

Science with NSL data

I have been thinking on this for a while. What we have been doing till now with the NSL data is , try do to some science out of the data which is available from the CONCAM's. And what is happening is that, especially for the variability of stars, we are forced to do variability of stars which aren;t...
by tilvi
Wed Oct 20, 2004 4:09 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Orionids meteor shower, Tomorrow
Replies: 0
Views: 1606

Orionids meteor shower, Tomorrow

Source: http://www.meteorscatter.net/metshw.htm

The Orionids meteor shower lasts from Oct 02 - Nov 11, peaks on Oct 21 st, 2004 / 0300UT±48hrs
ZHR : 20 meteors/hour,velocity 66.4km/sec,
several sub-maxima, timing & ZHR based on statistical analysis of past maxima
by tilvi
Mon Oct 18, 2004 2:08 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Beta Perseus
Replies: 20
Views: 8791

Vic,
Thats a good base. I think from these data sets, we have now enough confidence , atleat for HL and MK stations, to do systematic photometry study of stars.
by tilvi
Wed Oct 13, 2004 3:12 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: parallex determination
Replies: 1
Views: 1556

parallex determination

Here are two images (plane tracks?) seen at both, HL and Mk station. Would be a good object to calculate the parallex.
Image

Image
by tilvi
Wed Oct 13, 2004 1:32 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: algorithm for meteor detection
Replies: 5
Views: 4635

Re: algorithm for meteor detection

...comments? I have problems with english, so perhaps I've misunderstood you. Also, I come from digital image processing backgrounds (Kodak POS photo voodoo ;) ), so I will use other words here. If I understand you, you average "important" pixel values in X and then Y directions, and then...
by tilvi
Sun Oct 10, 2004 5:48 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: artefacts due to CCD sensitivity
Replies: 0
Views: 1557

artefacts due to CCD sensitivity

Heres I am posting a message from AAVSO list which describes in short the CCD sensitivity artefacts, -------------------------- lou krajci wrote: > The last two nights I've been imaging V417 Lyr (19 08 39.1 +30 43 09) to > determine some eclipse timings for this EB. A couple arcminutes to the > west...
by tilvi
Fri Oct 08, 2004 8:50 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Leonids 2001
Replies: 3
Views: 2702

Re: Leonids 2001

http://nightskylive.net/asterisk/templates/subSilver/images/concam_logo.jpg Just found some more information about this earthgrazer captured by MK CONCAM during Leonids 2001. http://www.phy.mtu.edu/~vpshetti/nsl/earthgrazer.jpg Another research paper abstract on the same is here http://www.scienced...