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Top Row: Gabi, Will, Kevin, Taylor, Ethan, Bernard Front Row: Adler, Jordan, Sandy, Rick, Ava, Joaquin. |
This year's Astro 9ABC class had some strong future astronomers contributing some awesome pictures and technology. We had some good times along the way, with additonal volunteer get togethers at Cabrillo Observatory and on asteroid occultation adventures too. Here's a few pix from the semester, below
Fixing my personal 8SE mount. A student managed to topple my personal Celestron 8SE telescope in prep for an asteroid occultation (nope. No data), ruining the hand controller and damaging the mount. Fortunately, Astro 9'r Bernard jumped in to dismantle the mount and see if we could fix it. Great work and initiative, Bernard!
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Bernard had every possible size possibly needed. |
Isolated one of the problems... |
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Giving it the "hum test" (not to be confused with the "Hmmmm test"). It certainly sounded better, if not quite as perfect as before the accident. |
Below - Nov 2 images, as we attempted to get a difficult asteroid occultation recorded on video for reductions and some real science output!
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Bernard and Jordan, at Bernard's computer. |
A friendly lizard hopped on my shoulder, appreciating the warmth as November's chill settles in. |
Bernard and Jordan, excited for Bernard's successful recording at high speed 0.03s integrations on this asteroid occultation. |
I'm 12 feet away, getting a second independent data set for the event |
Bernard, using software OCCULT4 to generate occultation predictions for the new starlet of the Kuiper Belt as "Most Intriguing Object" - Quaoar. Intriguing for it's recent discover by the Big Scopes in Hawaii of two rings beyond the Roche Limit where rings should not be, and followed by my own discovery of a new moon orbiting Quaoar in June of this year. |
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Jordan: M51: The picture was taken on a semi-dark night with some moon but no clouds. Taken from Cabrillo. Taken with a Williams Optics Askar 60mm. Taken with an exposure of 30 seconds. Took 82 images. -20.42 degrees Celsius. 10/29/2025. 9:29 pm. Deep Sky Stacker—65% for detected stars. The 82 images were stacked in Deep Sky Stacker with advanced commands: default for each option except light: kappa sigma clipping, kappa of 2, light iterations of 5 (rejects pixels that are outliers = no satellites), cosmetic check; detect and clean both hot and cold pixels, result mosaic mode (takes overlapping images of the main object and stitches them together), output: append a number to avoid file override (doesn't delete old files). Image, Adjustments, Curves—adjusted to keep the galaxy dimmer. Image, Adjustments, Hue/Saturation—adjusted saturation up to bring more color, got rid of the green saturation. Filter, Sharpen, Unsharp Mask—tightened up the stars. Filter, Noise, Reduce Noise—got rid of noise. |
Jordan: M31: 11 photos. Taken at 30-second exposure. Taken at Stanislaus River. Taken on a completely dark night. Taken with a Williams Optics GTF81 on a Losmandy GM8 mount. Taken with a Nikon D7000. Temperature was 46 degrees Fahrenheit. Deep Sky Stacker—set to 97% for detected stars. The 11 images were stacked in Deep Sky Stacker with advanced commands: default for each option except light: kappa sigma clipping, kappa of 2, light iterations of 5 (rejects pixels that are outliers = no satellites); cosmetic: detect and clean both hot and cold pixels; result mosaic mode (takes overlapping images of the main object and stitches them together); output: append a number to avoid file override (doesn’t delete old files). Photoshop—cropped. Curves—adjusted to darken the sky but bring up the brightness to the outer spiral arms of the galaxy. Image, Adjustments, Hue/Saturation—tones the blue saturation up, the yellow saturation down, tones the red saturation down to get rid of the red sky, attempted to turn the greens down. Image, HDR Toning—turned up the strength. Image, Adjustments, Curves—re-darkened the sky. Unable to remove green shading but decided this was the best possible picture. |
Jordan: Pleiades: 9 photos. Taken at 30-second exposure. Taken at Stanislaus River. Taken on a completely dark night. Taken with a Williams Optics GTF81 on a Losmandy GM8 mount. Taken with a Nikon D7000. Temperature was 46 degrees Fahrenheit. Deep Sky Stacker—set to 96% for detected stars (130). The 9 images were stacked in Deep Sky Stacker with advanced commands: default for each option except light: kappa sigma clipping, kappa of 2, light iterations of 5 (rejects pixels that are outliers = no satellites); cosmetic: detect and clean both hot and cold pixels; result mosaic mode (takes overlapping images of the main object and stitches them together); output: append a number to avoid file override (doesn’t delete old files). Edited on Photo Director 365. Used Curves to brighten the cluster but slightly darken the sky. Brought up the saturation. Cropped the photo to center. Re-toned the blue saturation. Brought up clarity to 100%. Made stars smaller by bringing the brightest contrast down. |
Jordan: Lexington Dam: Taken at Lexington Dam on 09/15/25. Taken at 11:16 pm. Taken on a clear night with a waning crescent moon. Taken during an occultation of asteroid “MPC” over an 11.05 magnitude star (for .8 seconds) with the 8SE. Video recording properties—brightness 7.5, contrast 6.5, hue 6, saturation 6, sharpness 2. Temperature was 58 degrees Fahrenheit. Picture of Jordan Brown and Rick Nolthenius. Edited on Photo Director 365. Adjust, Curves—adjusted the curve to brighten the bright stars but tone down the overall sky. Cropped some of Rick’s car. Adjust, Curves, Red—toned down red. Brought clarity up to 100%. Brought saturation up slightly. Bright brought to 82% and Brightest to 48%. |
Jordan: Orion Nebula M42: 4 photos. Taken at 30-second exposure. Taken at Stanislaus River. Taken on a completely dark night. Taken with a Williams Optics GTF81 on a Losmandy GM8 mount. Taken with a Nikon D7000. Temperature was 46 degrees Fahrenheit. Deep Sky Stacker—set to 81% for detected stars. Camera Raw Filter—adjusted sharpening and noise reduction. Image, Adjustments, Hue/Saturation—brought saturation up, brought red saturation up, brought blue saturation up. Camera Raw Filter—further adjusted sharpening and noise reduction. Image, Adjustments, Curves, Red—brought up red saturation further but de-emphasized the middle of the nebula. AstroTools—Make Stars Brighter. AstroTools—Make Stars Smaller. |
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Lagoon Nebula (M8). Adler Blackmun. 12” LX200 Schmidt-Cassegrain, ST2000XCM, 1x5min, Cabrillo Observatory, 9/10/2025 ~20:30-20:35 PST. CCDOPS: Dark subtract (-25C), Flat field (Date UNKN), Color process sRBG+gamma. No stacking, 1 photo because of clouds. Adobe Photoshop 25.9: Light curves (darken background), Saturation +30, Contrast +15, Astro tools (shrink stars), Spot heal brush (plane), Crop for print and Gallery.
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Messier 2, Star cluster. Adler Blackmun. 12” LX200 Schmidt-Cassegrain, ST2000XCM, 3x30sec, Cabrillo Observatory, 11/26/2025 20:50-20:58 PST. CCDOPS: Dark subtract (-28C, 10/30/2024), Flat field (11/06/2024), Color process sRBG+gamma. DeepSkyStacker: Stack 3 frames. Adobe Photoshop 25.9: Light curves (darken background), Green saturation -100, Strong unsharp mask (tighten stars), Crop for gallery. |
Telescope. Adler Blackmun. Canon EOS REBEL T5, EF-S 18-55mm, f/4, 1x13sec, ISO-3200, Cabrillo Observatory, 11/26/2025 ~21:45 PST. No subtracting or stacking. Adobe Photoshop 25.9: Light curves (darken sky), Red saturation -15, Spot heal brush (plane and branches), Strong unsharp mask (tighten stars), Crop for gallery. |
Pleiades, Star Cluster. Adler Blackmun. Raw photos provided by Dr. Rick Nolthenius, NIKON D7000, 8x30 sec, ISO-2500, Location UNKN, Est. 11/18/2025 20:45-20:55 PST. DeepSkyStacker: Stack 4 best frames. Adobe Photoshop 25.9: Light curves (darken background), Strong unsharp mask (tighten stars), Noise reduction, Crop for gallery. |
Moon. Adler Blackmun. QHY585 camera, 8SE telescope, 2.5000ms exposure, 60sec video (avoiding atmospheric interference), Cabrillo Observatory, 11/5/2025 19:33-19:34 PST.No subtracting or stacking, Picked best frame. Adobe Photoshop 25.9: Light curves (pop bright side), Contrast +15, Minimal editing, Crop for print and gallery. |
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Ring Nebula (M57), Gabi Szymczyk. Taken 21:57 PST, 10/22/2025, Cabrillo Observatory Dome, skies cleared up. Changed scope from East to West. 12” LX200 Schmidt-Cassegrain, ST2000XCM, 4x5min, 18.53.35 RA, 33.1.45 DEC, Back: 1197, Range: 4091, Declination: 33, Magnitude: 22. CCDOPS, DeepSkyStacker: delta sigma, stacked 4 frames, default to mosaic, cropped image. Adobe: Image: adjustment, levels and curves, Filter: Unsharpen mask. Medium resolution, space noise reduction. Adjusted saturation for white dwarf, enhanced blue. |
Casseopia, Gabi Szymczyk. Taken 21:35 PST, 9/10/25, Cabrillo Observatory, Casseopia shifted in the night sky, there was a shooting star five minutes prior photo. Canon EOS REBEL T5. No stacking due to interruptions with atmosphere. Adobe: Image: high curve, Filter: Unsharpen mask, space noise reduction. Medium to high resolution. |
Pleiades, Gabi Szymczyk. Taken by Dr. Rick Nolthenius, 20:45 - 20:55 PST, 11/18/2025, UNKN. Nikon D7000, 30sec exposures, DeepSkyStacker: delta sigma, stacked 3 frames, default to mosaic, cropped image. Canva: Temperature: 29, Tint: 37, Brightness: 35, Contrast -20, Highlights: -25, Shadows; 44, Whites: 29, Vibrance: 19, Saturation: 9, Sharpness: 39, Clarity: 13. |
Moon on a telescope, Gabi Szymczyk. Taken 19:38 PST, 10/29/2025, low exposure using IPhone 13 Pro. Cabrillo Observatory. Bernard set up 8SE telescope. No stacking, capturing image screen of telescope view. Canva: Temperature: -61, Tint: 8, Brightness; -48, Contrast: 8, Highlights: -37, Shadows: -21, Whites: -13, Blacks: 30, Vibrance: -36, Saturation: 13, Clarity: 10. |
Milky Way (Cygnus) Yosemite, Gabi Szymczyk. Taken 20:39 PST, 09/21/2025, Yosemite National Park, roughly 65 Fahrenheit. Nikon D100, 10sec exposures, DeepSkyStacker: stacked 3 frames. Canva: Temperature; -36, Tint: 41, Brightness: 33, Shadows: 28, Saturation: 15, Sharpness: 13, Clarity: 7, Minimal noise. (RN used PS 2025 curves to bring up foreground. It was just too dark to display as is) |
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Moon. Joaquin Fitzsimmons. 12” LX200 Schmidt-Cassegrain, ST2000XCM, 1x2500ms. Cabrillo Observatory. November 26, 2025. 20:26 PST. Weather: 58 degrees Fahrenheit, 84% Humidity, dew point 53 degrees. Clear. Ccdops v5.66: Dark subtract (-28C), Flat field (November 6, 2024), Color process DDP. Photoshop v5.12.8: Brightness/Contrast (brightness +75 and contrast +59 to sharpen surface and lessen effects of dew on lens), Hue/Saturation (saturation of Global Colors adjusted to –44; saturation of Greens adjusted to -100; lightness of Greens adjusted to -100), Blur tool (removed scan line effect in overexposed left side caused by changes in saturation and lightness in Greens), resized and cropped for export. |
Takahashi & Sky 90. Joaquin Fitzsimmons. Apple iPhone 13 mini, Wide Camera — |
Pacman Nebula (NGC281). Joaquin Fitzsimmons. 12” LX200 Schmidt-Cassegrain, ST2000XCM, 3x5min. Cabrillo Observatory. October 29, 2025. 21:30-21:49 PDT. Weather: 63 degrees Fahrenheit, 72% Humidity, dew point 54 degrees. Clear. Moon: First quarter 55% illumination. Ccdops v5.66: Dark subtract (-20C), Flat field (November 6, 2024), Color process sRBG+gamma. DeepSkyStacker v4.2.6: stack three frames, compute offset. Photoshop v5.12.8: Hue/Saturation (saturation of Greens adjusted to -100), Camera Raw Filter (Sharpening set to 55; Noise Reduction set to 81; Color Noise reduction set to 37), Color Balance (Levels set to [0,-5,0]), Curves (RGB base input set to 40 to darken sky), Vibrance (Vibrance +20; Saturation +5), Brightness/Contrast (Brightness +20; Contrast +18), resized and cropped for export. |
Great Pegasus Cluster (M15). Joaquin Fitzsimmons. 12” LX200 Schmidt- |
Orion Nebula (M42). Joaquin Fitzsimmons. 12” LX200 Schmidt-Cassegrain, |
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Taylor Hagen. NGC 7331 (The Deer Lick Group). This image was captured on |
Taylor Hagen. The Eagle Nebula, M16. This image was captured on September 10, 2025, starting at 21:58:01 local time. Acquisition utilized the 12" Meade f/10 telescope with an f/6.3 reducer and the SBIG ST2000XCM CCD |
Taylor Hagen. The Moon (Monochrome). This image was captured on 11/27/2025 |
Taylor Hagen. Deep Sky Star Field, Rural Kentucky. This photograph was |
Taylor Hagen. Steamer's Lane Lighthouse, Santa Cruz, CA. This night landscape was taken on November 12, 2025, using a Nikon Z6 III mirrorless camera with the NIKKOR Z 35mm f/1.8 S lens, mounted on a stable tripod. The exposure was a single, long 5-second shot at an aperture of f/8 and an ISO setting of ISO 200. The long shutter speed was selected to minimize noise while gathering enough light to illuminate the dark foreground and emphasize the Holiday lights on the Surfing Museum. The aperture of f/8 was used to ensure maximum depth of field, keeping both the nearby coastline and the lighthouse sharp. Processing began in Affinity Photo/Photoshop with a careful White Balance adjustment to harmonize the mixed light sources. Exposure adjustments then used the Shadows and Highlights tools to recover detail in the darker foreground without blowing out the bright light. A critical step was using the Clone Stamp and inpainting brush tools to clean the background by removing blurred people who walked through the scene during the 5-second exposure. Finally, clarity and color saturation were carefully boosted to enhance the textures and the vibrant glow of passing cars and city lights. |
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Helix Nebula. Will Glass 11-3-2025 Helix Nebula. RN: converted to jpg for the gallery. |
Soul Nebula IC1848 Cabrillo Observatory, Air temp 50f with high dew. No moon present, 45 mins across L S H O filters, Sensor temp -20c Gain 100 Taken with ZWO ASI 183MM, Williams Optics Z61 and .8x Flattener/Reducer. AM3 Tracking head. Processed in Pixinsight using WBPP, then edited with masks using Curves and Histogram transformation. Noise cleanup with NoiseXterminator. Final Stretch and touchups in curves, Export as Tiff. RN: It looks like a "sole", not a "soul". I'm just sayin'... |
Will Glass. 10-23-25 Comet SWAN and Eagle Nebula Pineridge BD. Airtemp 60f low dew. Low moon opposite horizon. 2 Hours L R G B Sensor temp -20c Gain 100 Taken with ZWO ASI 183MM, Williams Optics Z61 and .8x Flattener/Reducer. AM3 Tracking head. Processed in Pixinsight using WBPP, then edited. with masks using Curves and Histogram Transformation. Comet and Nebula plus stars started as separate images stacked and aligned for targets then combined with pixelmath. Noise cleanup with NoiseXterminator. Final Stretch and touchups in curves, Export as Tiff.
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Will Glass 10-4-25Heart of Cygnus (aka "The Gamma Cygni Complex") at Lick Observarory. Airtemp 50f No dew. Moon half illuminated on the opposite horizon. 1.5 Hours L S H O filters Sensor temp 0c Gain 100. Taken with ZWO ASI 183MM, Williams Optics Z61 and .8x Flattener/Reducer. AM3 Tracking head. Processed in Pixinsight using WBPP, then edited with masks using Curves and Histogram Transformation. Noise cleanup with NoiseXterminator. Final Stretch and touchups in curves, Export as Tiff. |
Will Glass 11-2-25 Comet Lemmon Pineridge BD. Airtemp 60F low dew. Low moon opposite horizon. 2 Hours IRGB Sensor temp -20c Gain 100 Taken with ZWO ASI 183MM, Williams Optics Z61 and .8x Flattener/Reducer. AM3 Tracking head. Processed in Pixinsight using WBPP, then edited with masks using Curves and Histogram Transformation. Comet and Nebula plus stars started as separate images stacked and aligned for targets then combined with pixelmath. noise cleanup with NoiseXterminator. Final Stretch and touchups in curves, Export as Tiff. |
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NGC 7497: Bernard Huynh |
NGC 1961: Bernard Huynh. |
Milky Way at Urlike Occultation site. |
Interstellar comet 3I/Atlas. |
NGC 972. Telescope 1: ATR2600M monochrome Camera cooled to -20c, SVBony L |
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M27 Dumbell nebula (RN: submitted wrong size, caption not plain text , and .png not jpg, no thumbnail) |
M57 Ring Nebula: Oct 22, 2025 (RN: submitted wrong size, caption not plain text, and .png not jpg, no thumbnail) |
Big Dipper Aut 27, 8:50pm Asus zenphone 9 |
Name: NGC 7331 Milky Way's Twin |
NGC 281 (Pacman Nebula) Oct 29, 2025 |
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Dumbbell Nebula (M27), Ava Storm. Raw photos by Dr. Rick Nolthenius, NIKON D7000. ISO 4000, 11x30 sec. Est 11/8/2025, 20:03:00 PST, Location Unknown. Deepskystacker: stack 11 frames. Adobe Photoshop: Version 10. curves (lower right RBG/add blue), unsharp mask, low brightness, reduce blue, add contrast, add saturation (general & magenta), reduce RGB, add saturation (magenta), curves (brighten nebula), curves (darken darks), saturation (desaturate stars), contrast up, levels, hue & saturation (add magenta). |
Bode’s Galaxy & Cigar Galaxy (M81 & M82), Ava Storm. Raw photos by Dr. Rick Nolthenius, NIKON D7000. ISO-2500, 16x30 sec. Est 11/8/2025, Time Unknown, Location Unknown. Deepskystacker: stack 16 frames. Adobe Photoshop: Version 10. Crop image, curves (+blue, -green), curves (-green/red, +blue), add contrast & brightness, fade auto color 2%, hue/saturation (-green/red), reduce contrast, curves (-green, +blue/red), curves (brighten galaxies), curves (darken darks), curves (+blue), desaturate red, build saturation, crop image. |
(photo not readable but print version looked OK) Moon, Ava Storm. First quarter phase, clear sky. 8se telescope, QHY585 |
Constellation Lyra, Ava Storm. Canon EOS REBEL T5, f/4, 1x10 sec. 10/29/2025 21:50, Cabrillo Observatory. No dark subtract nor stacking. Adobe Photoshop: Version 10. Sharpen, sharpen edges, despeckle, reduce |
NGC1600, Ava Storm. 12” LX200 Schmidt-Cassegrain, ST2000XCM, 5x300 sec. |
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