Sunday, April 15, 2018

Mersing March 2018

x8 LF stacked in Sequator 
x1 LF  LRCC4
Dawn coming and MW going to thin out and disappear. 

Reprocessed in Sequator x24 LF  and cropped (vignette) milky way  recovering the dusk lanes

JPG render of CR2 with overexposed sky iso3200,  shutter 30 s  Canon G5x 8.8mm f 1.8.  LP causes overexposure but the details is recoverable in Raw file
Recovering overexposure in LRCC 4 


Processed 


Previous trip to Mersing with better MW?

 Reprocess Kuching Milkyway

X 1 LF  Kuching Milky way

Sequator Stacking of stars

 Stacking with Sequator examples


4 LF was stitched together using foreground trees and hills. Sirius the brightest star right in the middle of the frame.


A + B + C



A ( 0238-0252) 

B (0253-0262)

C (0263-0272)

Tuesday, April 03, 2018

Milkyway post processing - my Journey



<<< under construction>>>


Take x10 CR2 milky way images  ig0363.cr2 to img0373.cr2

PS  check lonelyspec youtube procedure

DSS





Sequator  




Thursday, March 29, 2018

Sprite Lightning and A meteor in Crux

  With Tiangung 1 reentries on April fool day in my mind.... last night i went to Space Track and download the TLE ...

  SPRITE Woke up and find a cloudy sky outside. I glanced at the wall clock ... thinking I should shut the system down instead of the scheduled 7am automatically.   Luckily I didn't stop the gazing ccd /lens much earlier.

    As I strolled through the captured frames through a long list of cloud-filled sky. Then this sprite peak-hold image jumped out at me. There was another clip where only the top 'tentacle' was seen. I bet a group of sprites was exhibiting themselves nearby.  I want a closer look - the 25mm Avenir f 0.95 manual iris lens and Watec 902HUltimage.  The time stamp says 6:32

Sprite caught in 25mm f0.95 lens. Ufocature sw



Partial Sprite seen with a few tentacles



Another Deja Vu  -  As I trained the lens to centre on the Compact southern cross Crux i had the intention of why not getting a meteor flash by the Cross.  ( did this thinking many years ago and i got it too).  Mum took a month holiday so i stick out the lens from this unit.

If they come you will be captured.  A proven bw reliable set up but migrating to  a color mirror-less camera and high video rate system will start as soon as i got some decent sky and meteor streams picking up after April



More for aesthetic than anything else.  Crux or the Southern Cross giving you an idea of the lens FOV too


Tuesday, March 13, 2018

Humanity Star March 09 2018 flashes images

Humanity Star March 09 2018 Passages through False Cross Vela




    Using Virtual dub to step through the individual flashes.

    First, a combination plot showing the series of flashes of varying brightness as detected by Ufocapture software. I hit the rec button when the time is coming and hit again to stop recording. The peak hold images through the exposure will flag the Humanity Star flashes.

    Humanity star travel upwards from bottom to top within the red lined box


    The followings are individual frames seen from using a VirtualDub slider to step through the individual flash






Humanity Star brighter than delta Vela
HS is ~ as bright than delta vela ( mg 1.95 )


Wednesday, March 07, 2018

Humanity Star - Flashes by Canopus March 06 2018

Humanity Star 




From heavens-above for my location - Humanity Star ( HS) Mag +5.1 passing close to easily recognisable Canopus on March 06 2018 ~20:24 before entering earth's shadow.  Canopus is visible through my sitting room window.

But there are clouds
Clouds were there and luckily sky cleared and the mag 6 + stars visible

Using Sonotaco UFOcaptureHd software, I hit the button around 20:24:13 and let it records 3 minutes. The resulting peakhold images revealed clearly detected flashing 'dots' per the heavens-above plot.

I tried replay the avi file and managed to detect a flash at 20:24:41. Then after a few attempts managed 2+1 additional flashes.  I also tried stacking the avi using Registax which had no benefit for very short tiny flashes.  THe canon setup didnt see anything as i started the remote release too late.

Canon G5x and Watec 902h2/ Avenir 25mm f0.95

Humanity Star Path 

Screen showing the series of blue dots marking HS flashes

Sonotaco UFOcaptureHd software - Stars trailed except for the brief satellite flashes
Resources : on HS

G5X gave pretty good stellar magnitude too after histogram stretching



Friday, May 12, 2017

eta aquarids 2017 May 4-5-6



May 2017 - eta Aquariids Halley's comet debris. This year there is a prediction of possible enhancement from -615 debris 5-15 hrs 05-05


Lens and 1/2" ccd

Looking up video motion detection system from 8 floor. 

    This time I am running lighter laptop instead of a long video cable to the desktop in living hall. I have replacing the HP laptop with a solid state hard disk.  No more sluggish hard disk access and rid of junk software.

    The lap-top and set up with new 4mm f0.75 Pentax CS 1/3 lens ( was sitting in vendor exhibition shelf and i noticed a 0.75 f ratio ! I bought it for S$500.00) and Watec Ultimate 902H2.  Again still using the over decade's old  wing nut-wooden pieces  which forms the extension arm so I can poke out side the kitchen window.

   The set up is stable ( with 4 runs ) with AC powered 12 volt the ccd  and without any interruptions for continuously monitoring the sky from after midnight to daybreak.

IMO Live plot  courtesy 



From IMO live plot the peak is at 5-5-2017 18hrs UT which is 5-6-2017 2 am. The radiant will below the horizon at this hour so I can see  them typically late 3 am or 21 hr onwards.

May 05 2017. Saturn and Antares dotted the upper part of the co-adds frames with meteors. 


May 6 haul of meteors, better bunch together this time

May 04 2017

Tally sheet - was using this to do my co-adds in IRIS

 A gross look without confirming the trajectories of the detected meteor the hourly rate is about the same for the hourly interval. THe peaking is broad indeed.



Here is the visual HR formula will figure out how valid whether we can devise a equivalent form a video lens.

Actual Hourly Rate = =(ZHR x sin(h))/((1/(1-k)) x 2^(6.5-m)) where
h = the height of the radiant above the horizon
k = fraction of the sky covered in cloud
m = limiting magnitude

Wednesday, December 17, 2014

Gems 2014 Singapore - Best so far

Dec 15 14 Sunday Gems from 0 hrs to day break - i have changed the FOV to counter the rotated radiants.
Dec 14 14 Sunday Gems  10 pm to 0 hrs. The first Gem started around 10pm.  Visually two were seen out of kitchen window. One of them with a distinctive round head casting a yellow white reflection.  Dotted trails were fom Riger - Sirius - Canopus ( below)

Sat night the sky was not as great as on Sunday





Locations of visitors to this page