View allAll Photos Tagged Celestron
-Celestron NightScape CCD @ prime with f/6.3 reducer
-Celestron NexGuide Autoguider
-80mm guidescope
-C8 SCT
-CG-5
-1hr20min total: 6x600s 4x300s light subs, equal dark subs, 25 bias frames. Heavily cropped.
-Taken on 11/10/12 from 7pm-10pm HST
Our dark-site was compromised by lazy fisherman campers with HUGE bonfires, and they were all upwind of us. :( This is as sharp as I could get the focus!!
Really starting to see the need for filters too. The photo's completely overrun by stars! Need at least an OIII filter, but an Ha would be nice! Unfortunately my CCD is a colour CCD, so it presents a problem with using filters I've found. Lumicon's DeepSky filter is virtually unusable with my CCD! It's fantastic for visual and monochrome CCD though.
Celestron SLT127MAK
ZWO ASI224MC
Camera settings:
Capture area=640x480
Turbo USB=80
Gain=181
Exposure=0.029425
White balance (B)=99, (R)=50
M83.
Celestron 8 inch SCT on CG-5 mount, guided by Orion 50mm miniguider and PHD. Editing in DSS and Photoshop Elements. Canon 60D DSLR (unmodified)
Canon 450D/XSi Baader modified, Celestron C14 Hyperstar, BackyardEOS, no guiding.
30x30 seconds @ 400 ISO, 30 Darks, 100 Bias/Offsets, no flats.
Fully processed with PixInsight, except resize with Photoshop CS6.
The altitude motor that does work is driven with a steady roughly-square-wave shape with peaks at +8.5V or -8.5V depending on direction. At full speed you simply get 8.5 V DC. I imagine the pulses are a poor man's way to control the average voltage by controlling how long the level is low or high.
[Looking around the Internet, this is called Pulse-Width Modulation or PWM, which is a standard way to control the speed of a DC electric motor -- The motor can't respond to this 20 kHz oscillation in voltage because its mechanical inertia acts like a low-pass filter so it essentially “sees” a lower constant voltage equivalent to the temporal mean voltage of the signal]
The period of about 51 microseconds suggests the PIC is controlling the motor in periods of 1024 steps at 20 MHz (1024/20000000=51 us). There is a 20 MHz crystal on the PIC circuit board. Alternatively, it might be something like 256 steps at 5 MHz.
In the azimuth motor that doesn't work you see the same pattern, but the teeth of the wave widen over time until the signal is always high (at Rate 1 it takes many seconds, at Rate 9 it immediately jumps to always high). I imagine this happens because the encoder isn't moving, so the PIC thinks it has to raise the average voltage to get the motor up to speed.
I bought one used GT motor on eBay which is already on its way here (visually it looks the same, but I'm not sure it will actually work with the SLT circuitry and mount). I also ordered two new SLT motors, model SLT-F00-1A (instead of SLT-F00-1), from telescopes.net that may take a bit longer to arrive.
Celestron set #44410, Slide No. 23, Spinal Cord cross section, 6mm wide.
Nikon 1 V1, prime focus of AmScope SZM stereomicroscope, c-mount adapter on trinocular port, dark field stage, ISO 200, 1/2 second.
My first attempt at using the Celestron Neximage 5 planetary imaging camera. My scope polar alignment was poor, the Moon was still low in the sky (i.e. I was looking through lots of thick turbulent atmosphere) and I think my ETX-90 telescope requires collimiation! Excuses, excuses... I have much to learn and I can do better!
Getting ready for the Venus transit
Celestron Nexstar 80mm
www.flickr.com/photos/howzey/927443639/in/set-72157601056...
Vila Mariana - São Paulo/SP - Brasil
Câmera Nikon D90
GPS: Nikon GP-1
Telescópio Celestron C90 1000mm f11 Maksutov
www.flickr.com/photos/carloscastejon/4547747780
Velocidade: 1/200
ISO/ASA: 800
Tripé: Manfrotto 728B
Software: Não
Corte: Não
Celestron C8 SCT
CG-5 mount
2.5x barlow
IR filter
Microsoft LifeCam HD5001
Processed with PIPP, AS!2, RG6, and GIMP
These are the first photographs I took with my new Celestron 8" NexStar telescope, attached to my Nikon D5200. I have experimented with different speeds, ISOs and post-production.
Celestron Avx mount
Explore Scientific ED 80
Celestron 8300 nightscape at -4.3C
50 mins exposure per band total 150 mins
Celestron C11, Televue 2.5X Powermate, ZWO 120MC. Stacked in Autostakkert and processed in Registax 6, Photoshop and Topaz Denoise. Best 20% of frames out of 3000 taken. Seeing fair to good.
Setup to shoot out my flat window - not ideal but good enough to test everything is OK - which as you can see from the image on the camera's LCD it's working just fine.
Celestron Omni XLT 120mm f/8 EQ 900mm Refractor Telescope
Eyepiece 6mm
Nikon D7100 Metodo proyeccion Ocular.
Registax + Fistwork + PS
Buy online Celestron astromaster 114eq telescope in dubai
#tog #dubai #uae #onlineshopping #celestron #astromaster #telescope #buytelescope
Telescòpio: celestron 130 slt(130mm/f5) modificado
Montagem: celestron nexstar slt altazimutal computadorizada
Câmera: Canon sl1 modificada com filtro astrodon ad40 clear
Baader MkIII coma corretor
Filtro astronomik cls ccd eos clip
Deep sky stacker: calibração e integração dos frames/drizzle 2x
Processamento: photoshop cs2, astronomy tools
Exposição total: 50 minutos
09/2015
serra negra- são paulo
I think that is the giant red spot, there.
A series of images from about 90 seconds of celestron neximage webcam footage.
640x480 original res.
Using a Celestron 6" SCT with 2x Barlow.
Stacked with Registax 5.
First attempt at astrophotography.
Camera: Nikon D5000
Lens: Celestron XLT 127 Schmidt–Cassegrain telescope (fl 1250mm)
ISO: 100
Shutter speed: 1/8
Minimal PP in Aperture
Celestron C8 with f6.3 focal reducer. Canon XSI modified & peltier cooled, Astronomik CLS filter. 20x1 min. iso1600. 1x10 sec. for trapezium. Deep sky stacker & Photoshop CS2
Hey, it's lens day! that's right all you gearheads, after 9 months? the last part I needed to get the spotter fired up is here. It's getting dark and unless there's a nice moon tonight, I probably will have to wait to shoot this till tomorrow. Been a lot of fooling around to get this thing up and running, but the hand held quick peek I got thru the VF of my Nikon FG makes me suspect I have an interesting toy here for under $75....