

Opossums have 13 nipples
Opossums have 13 nipples
What equipment/settings did you use?
Rip my north-facing apartment
Another pic from my recent dark site trip! Decided to shoot something bright and in true color LRGB. If I had stayed another night and gotten more data I probably would’ve pushed the image more to get more background details, but overall I like this darker look on the image. Last time I shot this nebula was in 2022 using the false color OSH palette). Captured on July 26th, 2025 from a bortle 3 zone (deerlick astronomy village).
Places where I host my other images:
TPO 6" F/4 Imaging Newtonian
Orion Sirius EQ-G
ZWO ASI1600MM-Pro
Skywatcher Quattro Coma Corrector
ZWO EFW 8x1.25"/31mm
Astronomik LRGB+CLS Filters- 31mm
Astrodon 31mm Ha 5nm, Oiii 3nm, Sii 5nm
Agena 50mm Deluxe Straight-Through Guide Scope
ZWO ASI-290mc for guiding
Moonlite Autofocuser
Acquisition: 4 hours 2 minutes (Camera at -15°C), half unity gain
L - 49x120"
R - 267x120"
G - 23x120"
B - 23x120"
Darks- 30
Flats- 30 per filter
Capture Software:
PixInsight Preprocessing:
BatchPreProcessing
StarAlignment
Blink
ImageIntegration per channel
DrizzleIntegration (2x, Var β=1.5)
Dynamic Crop
DynamicBackgroundExtraction
duplicated each image and removed stars via StarXterminator. Ran DBE with a shitload of points to generate background model. model subtracted from original pic using the following PixelMath (math courtesy of /u/jimmythechicken1)
$T * med(model) / model
Luminance Linear:
Blur and noisexterminator
Stars removed with starx
ArcsinhStretch + HistogramTransformation to stretch nonlinear
RGB Linear:
ChannelCombination to combine monochrome R G and B images in to single color image
SpectrophotometricColorCalibration
BlurXterminator (correct stars only)
HSV Repair
Extracted stars with starXterminator, to be used later for independent starless processing
ArcsinhStretch + HistogramTransformation to stretch nonlinear
Slight saturation curve boost
** Stars only processing:**
ArcsinhStretch + HistogramTransformation to stretch nonlinear
Slight SCNR to remove greens
Curves to boost saturation
Nonlinear Processing:
LRGBCombination to combine stretched RGB and L images
NoiseX again (more for chrominance noise)
Several rounds of curve adjustments for lightness, contrast, saturation, color balance, with various masks
LocalHistogramEqualization (one at 16 scale for fine details, and another round at ~300 scale for larger structures)
More curves
Color Saturation
Even more curves
Slight SCNR on the background
Pixelmath to add in the stretched RGB stars only image from earlier
This basically re-linearizes the two images, adds them together, and then stretches them back to before. More info on it here)
mtf(.005,
mtf(.995,Stars)+
mtf(.995,Starless))
Resample to 80%
Tighter crop in on just the nebula
Annotation
After months of clouds and rain, I had a clear night and went out to a dark site! I shot this a few years back in narrowband which helped show the faint outer shell, but this time I decided to photograph it in true color LRGB. Captured on July 26th, 2025 from a bortle 3 zone (deerlick astronomy village).
Places where I host my other images:
TPO 6" F/4 Imaging Newtonian
Orion Sirius EQ-G
ZWO ASI1600MM-Pro
Skywatcher Quattro Coma Corrector
ZWO EFW 8x1.25"/31mm
Astronomik LRGB+CLS Filters- 31mm
Astrodon 31mm Ha 5nm, Oiii 3nm, Sii 5nm
Agena 50mm Deluxe Straight-Through Guide Scope
ZWO ASI-290mc for guiding
Moonlite Autofocuser
Acquisition: 2 hours 50 minutes (Camera at -15°C), halfunity gain
L - 31x120"
R - 19x120"
G - 18x120"
B - 17x120"
Darks- 30
Flats- 30 per filter
Capture Software:
PixInsight Preprocessing:
BatchPreProcessing
StarAlignment
Blink
ImageIntegration per channel
DrizzleIntegration (2x, Var β=1.5)
Dynamic Crop
DynamicBackgroundExtraction
duplicated each image and removed stars via StarXterminator. Ran DBE with a shitload of points to generate background model. model subtracted from original pic using the following PixelMath (math courtesy of /u/jimmythechicken1)
$T * med(model) / model
Luminance Linear:
Blur and noisexterminator
ArcsinhStretch + HistogramTransformation to stretch nonlinear
RGB Linear:
ChannelCombination to combine monochrome R G and B images in to single color image
SpectrophotometricColorCalibration
BlurXterminator (correct stars only)
HSV Repair
ArcsinhStretch + HistogramTransformation to stretch nonlinear
Slight saturation curve boost
Nonlinear Processing:
LRGBCombination to combine stretched RGB and L images
NoiseX again (more for chrominance noise)
LocalHistogramEqualization
Several rounds of curve adjustments for lightness, contrast, saturation, color balance, with various masks
Resample to 80%
Tighter crop in on just the nebula
Annotation
Hi OP can you include more information on your equipment/processing?
It’s a great pic
easy explanation
It’s the fun criss cross your nerves do before they go into your arm, and is the bane of first year med students everywhere
For me personally, HHC is a little less strong than regular Δ9, but I get none of the anxiety with it. THC-A just turns into regular Δ9 when heated. The phorols (THCP and HHCP) are the incredibly strong ones, and I’ve had 2mg of HHCP make me high for a solid 24 hours before.
I’d highly recommend checking out Turkey’s site and info sheets for all things alt noids
I host em with the Ancients of VRChat group (ancient meaning just adults in the game)
It’s now on our ever growing backlog!
Nearly every Friday night for the last 3 years I’ve done bad movie night with friends in vrchat. This week it’s Slaughter Day (followed immediately with a good movie, Team America)
It varies a LOT from camera to camera, but a lot of them have a sweet spot around 800-1600 for astro. For astro/low light photography, a higher ISO actually decreases the noise in the image, as the signal gets amplified before it’s read. You can test it for yourself by taking several pics of something dark, and changing only the ISO between shots. Matching the brightness in post-processing helps show the noise in low ISO images.
Also IIRC a lot of Sony cameras are noise-invariant when changing ISO
Two weeks while backpacking in New Mexico (unless you count getting rained on every day as a shower)
Was any processing done to this?
Ever since they got rid of woke the starships just keep blowing up
Pretty good for a phone! I’m guessing it’s doing some kind of stacking process? I think there would be some streaking with a single 4 min exposure, but your stars look nice and sharp