Executive Committee

The Executive Committee of the Teton Photography Club is charged with developing programs and events, scheduling venues, communicating with members, and maintaining the financial and other records for the Club. The members are volunteers and receive no compensation for their work. The Executive Committee also serves as the officers and Board of Directors for our non-profit corporation, the Teton Photography Group.

The current Executive Committee members are:

  • David Navratil, President, Director of Exhibitions & Galleries


David Navratil
David Navratil

I was drawn to photography by the images in classic magazines such as National Geographic and Life. The stories those images conveyed were very informative and powerful.  After college, I took a continuing education course in basic photography and purchased a camera. Unfortunately, a few years into a career in the tech industry, I gave up photography due to time constraints. 25 years later I moved from Texas to Jackson Hole, and the photography bug bit again. I enjoy taking black and white and wildlife, especially birds.  In addition, I also enjoy finding the unusual or abstract texture and shapes in both natural and man-made objects.

  • Loren Nelson, Past-president, Director of Education


Loren Nelson
Loren Nelson

After over 30 years in academics reality struck when Loren Nelson decided to travel and take photographs on a full-time basis. Retirement allowed this “journey” to begin late 2010 and the travel started in March 2011. He spent nearly two years traveling among the national parks and public lands in the US and Canada to capture the beauty and harshness of nature to share these images with those who have similar interests.

In 2012 Nelson moved to Jackson and this was the the birth of Natural Photography. Since then Loren has built a portfolio of more than 150,000 photographs and continues to capture digital images of wildlife and their scenic environment in Jackson and the great western states.

He was a founding member of the Teton Photography Club in 2013 and its first President. 


Randy Isaacson
Randy Isaacson

After enjoying 40 years of teaching motivation, learning, and interpersonal communications at Indiana University, I was looking for “work” in retirement. Joining the TPC to update my photography skills helped lift my spirits. And working with other amateur photographers through the Peer Mentor Program has really motivated me to help others as I improve my own photography. The Peer Mentor Program is a group of about twenty advancing amateur photographers who meet together for a photo shoot and a critique every month. We work together to learn the technical and artistic aspects of photography, and we enjoy each other’s company. Read more about the TPC’s Peer Mentor Program on this site, read my blog at FirstAnAmateur.com.


Michael Cohen
Michael Cohen

I picked up my first camera when I was a kid.  When I was in high school you never saw my face because there was always a camera up to my eye. I shot high school basketball games and pictures of logs and stuff like that.  After high school I put the camera down for over 25 years.  On a trip to the Galapagos in I was introduced to digital photography and in 2004 I bought a Nikon D70.  Digital photography was still quite new, and not very good.  Other the years I’ve shot more and more, and digital photography has gotten better and better.

Now I spend a lot of time traveling and making pictures.  I shuttle between Boston, Jackson Hole, WY and the New England coastline, and wherever the next airplane takes me.

I love making photographs and hope you enjoy looking at them.  Thanks for visiting.  www.mscpix.com

    • Cathy Aronson,  Interim Secretary


    Cathy Aronson

    I am a recovering Internet Geek who lives full time in Jackson, WY.  I have been taking pictures since I was in my teens.  In 2013 I learned night photography and became a very passionate night photographer. My digital printing business, Daydream Imagery, (daydream.com) grew out of my desire to make good quality prints of my photography. I now have a thriving business printing for painters and photographers. I recently began photographing art and producing prints for painters as well as experimenting with other substrates such as tin foil and molded plastic.  I guided photography tours and taught photography in the Grand Tetons for a number of years.
    I now teach photography and printing for Honoring Our Veterans (
    honorvets.org) . I am also on the board of Honoring Our Veterans. I am interested in being on the board of TPC because I want to contribute to our wonderful community of photographers.  I am also the chair of theboard of Industry Network Technology Council. (industrynetcoucil.org

    Aaron Linsdau, Webmaster and Director of Web Content


Aaron Linsdau
Aaron Linsdau

Located in Jackson Hole, Wyoming, Aaron Linsdau is a commercial and adventure photographer. He has a passion for getting the shot, even if he has to go to the middle of Antarctica. His focus is on controlled lighting photography, specializing in jewelry, art (sculpture, painting), and product photography. If you need your painting photographed with color correction and a color reference, contact Aaron. His architectural composite images will bring in customers. He can make high-resolution images that you can make reproductions from. Email Aaron if you want images that will have customers calling time and again. Aaron has many satisfied clients in and around Jackson. www.aaronlinsdau.com

  • Rachael Dunlop, Website Image Editor, Director of Social Media

Rachael Dunlop

Rachael trained in analog photography immediately out of high school and went on to shoot bands in black & white, whilst working as a copywriter in advertising. Photography took a back seat in 2005 when she went to university to get a PhD in cell biology and she didn’t pick up a camera again until 2011, by which time everything had gone digital. She initially focused on birds, over time expanding her repertoire to other wildlife and some landscape.

Rachael is originally from Sydney Australia and has shot all over the world. She’s been in the Tetons since 2015 and spends as much time as she can in the field shooting unique wildlife like hummingbirds and grizzlies – neither of which she’d seen before coming to North America. Of the Tetons she says, “It’s a photographer’s paradise. It’s virtually impossible to take a bad shot here.”

Website: https://drrachie.net

  • Barney Koszalka 


Barney Koszalka

I consider myself one of the fortunate few that can drive a few miles from my home and be in a place where Nature sets the rules.  Jackson is like that and many of the images that have won awards for me in regional and national competitions have come from this area.  When we settled in the Jackson area, the members of the Teton Photography Club were quick to share locations and techniques they developed for shooting wildlife and landscapes.  This sharing helped take my photography to another level with my work being recognized by the Sierra Club, the North American Nature Photography Association (NANPA), Carolina Nature Photographers Association (CNPA) and as a finalist in the Nature Comedy Wildlife competition. I’m committed to share what I’ve learned with other members as well as by contributing to CNPA’s Camera in The Wild quarterly magazine, conducting reviews and demonstrations of new post-processing tools and critiques for local photography clubs.

  • Karyn Schiller


Karyn Schiller

After 10 years of planning I finally realized my dream last year of moving to Jackson full time together with my husband, Marc. I am a passionate wildlife photographer and after my first trip out here 11 years ago, I knew it was here I needed to be. I love nothing more than being out searching for animals, and then experiencing the thrill of trying to capture images that move people to greater appreciation of our wild places. In my other life I am also an immigration lawyer, mother and newly-minted grandmother. I look forward to many wonderful experiences through the TPC with you all and am honored to be a part of this group.

  • Sue Lurie

Sue Lurie

As the least experienced member of the Executive Committee, I hope my story encourages other photography “newbies” to join us for the fun and the learning. I noodled around with a camera in high school and college but never got past basic skills. Around 2016 or so, I decided I wanted to capture the beauty and serendipity that the world around us reveals through photography but wasn’t sure how to get past the level I was at, so I joined the Teton Photography Club. There is so much still to learn; however, it’s been an exciting artistic expedition that’s still in progress. The monthly topic assignments, critiques, presentations and educational offerings are helping me to capture what I see in new and more nuanced ways; and other members are always generous with their help and advice.  It’s my hope that anyone reading this story will want to join us for her or his own creative adventure. Welcome!

  • John Hebbeger, Jr.

John Hebberger Jr.

My earliest recollection of photography was my mother’s Kodak Brownie box camera, mostly on summertime family vacation trips to the west (Colorado, Wyoming). I began a slow transition from film to digital photography around 2004, though becoming more serious both with digital photography and digital equipment about 2006 after having purchased a Nikon D200. Not long thereafter I found and began use of Adobe’s Lightroom processing software package.  My primary photographic interests and efforts have been with wildlife, landscape, and flower photography.